Number Sense Continuum

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Number Sense and Numeration – includes solving problems with ratios, proportions, fraction-decimal relationships, exponents, number theory, place value, and the relationship between numbers.

 

Skills and Concepts                                                                                            

 

RIT scores between 151 and 160

Whole Numbers
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Match sets of objects to numerals 0-40 to demonstrate an understanding of one-to-one correspondence

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Identify and count numbers 0-20

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Identify and order ordinal numbers (first to tenth)

Fractions
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Identify equal parts of a region (halves, thirds, fourths)

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Represent fractions by using models and drawings

Ordering, Equalities and Inequalities
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Compare and order numbers and sets of objects 0-10

New Vocabulary in this Range: how many

New Signs and Symbols: for answer

 

RIT scores between 161 and 170

Whole Numbers

·        Identify missing numbers in a series through 100

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Identify the number that is “one more than”, “one less than”, “10 more than”, and “10 less than” a given number

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Count objects that are grouped into tens and ones

Fractions
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Identify one-half of an object from a picture

Place Value
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Identify and understand the place value and value of each digit in numbers through the hundreds

Ordering, Equalities and Inequalities
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Order numbers 0-100

New Vocabulary in this Range: ones, tens, hundreds, thousands, numeral, ordinal numbers through eleventh, counting

New Signs and Symbols: none

 

RIT scores between 171 and 180

Whole Numbers
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Compare two or more sets of objects (up to ten objects in each group) and identify which set is equal to, more than, or less than the other

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Count and write by 10’s to 100

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Compare, group, and order whole numbers to 100 by using the symbols for “less than”, equal to”, and “greater than” (<, =, >)

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Distinguish between odd and even numbers

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Count by 2’s to 20

Fractions

·        Identify one-half of an object or set

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Identify fractional parts of a region or group

Place Value, Expanded and Standard Notation
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Write numerals in expanded form through the thousands place

Ordering, Equalities and Inequalities
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Use > or < symbols to compare two numbers

New Vocabulary in this Range: even numbers, same as, fewest

New Signs and Symbols: < and > signs, = sign

 

RIT Scores between 181 and 190

Whole Numbers
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Identify one more and one fewer

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Count and write by 2’s and 3’s

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Complete a number pattern

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Round 2- and 3-digit numbers to the nearest hundred and tens

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Identify the value of Roman Numerals using I, V, and X

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Apply rules of divisibility by 5

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Identify the greatest common factor of two whole numbers each of which is less than 100

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List some common multiples of two whole numbers

Fractions
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Separate regions into sub regions that are equivalent (halves, thirds, fourths)

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Change a fractional numeral to its simplest form (lowest terms)

Decimals

·        Identify the greater or lesser of two decimals

Place Value, Expanded and Standard Notation
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Match number words to numerals to the ten thousands place

·        Identify and understand the place value and value of each digit in numbers through the hundred thousands

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Add whole numbers using place value

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Identify and understand place value for decimals (tenths, hundredths, and thousandths)

Ordering, Equalities and Inequalities
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Order sets of objects 0-20

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Identify the greater or lesser of two numerals

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Order numerals through 999

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Identify the numeral that comes before, between, or after any given numeral through 999

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Compare and order fractions*

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Compare and order decimals to the hundredths place

New Vocabulary in this Range: first, second, third, etc., odd, one-fourth, one-half, reduce, fractions, order, divisible, round, smallest, largest, lowest terms, greatest common factor, least common multiple, closest, units, set, digit, greater than, greatest

New Signs and Symbols: none

 

RIT Scores between 191 and 200

Whole Numbers
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Order numerals through 9999

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Count and convert to dozens

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Round 4- and 5-digit numbers to the nearest hundred thousand, thousand, hundred or ten

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Identify numbers as prime or composite

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Apply rules of divisibility by 2’s

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Complete a factor tree for a number (prime factorization)*

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Understand and demonstrate that many whole numbers break down in different ways (e.g., 12 = 4 x 3 = 2 x 6 = 2 x 2 x 3)

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Identify the least common multiple of two whole numbers*

Fractions, Ratio and Proportion
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Write equivalent fractions using pictorial representation

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Find equivalent fractions using multiples and factors*

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Write mixed numbers as improper fractions and improper fractions as mixed numbers*

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Identify the least (lowest) common denominator of two fractions

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Express a fraction as a decimal and vice versa

·        Solve proportions using the cross product method*

Decimals
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Write a decimal for a shaded region (to tenths place)

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Identify and understand place value for decimals (tenths, hundredths, and thousandths)

Percents
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Model percents using a 10 x 10 grid

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Write a decimal or fraction as a percent and vice versa

Place Value, Expanded and Standard Notation
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Identify the number and written word for ordinal numbers

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Write numerals in expanded form through the hundred thousands

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Match word names to numerals through billions

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Identify place value using model to count

·        Add whole numbers using place value

Ordering, Equalities and Inequalities

·        Identify and understand the greater or lesser of two numerals (use the symbols < and > through 999,999)

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Compare and order fractions and mixed numbers

Exponents

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Exponential representation of 3 multiplied numbers (2x2x2)

New Vocabulary in this Range: thirds, fourths, rounded, thousands, exponential form, mixed number, improper fraction, lowest common denominator, percent, expanded form, prime, factor, proportion

New Signs and Symbols: use of dot as a multiplication symbol

 

RIT scores between 201 and 210

Whole Numbers
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Round to the nearest millions and billions

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Apply rules of divisibility

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Identify the greatest common factor of two whole numbers each of which is less than 100

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Write the Roman numeral equivalent of Arabic numbers 1-2000 and vice versa

Fractions, Ratio and Proportion
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Change a fractional numeral to its simplest form (lowest terms)

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Write the missing number in two equivalent ratios

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Use a number line to identify a fractional point

Decimals
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Write a decimal for a shaded region (hundredths)

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Write a terminating decimal as a fraction or mixed number

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Round decimals to nearest whole number, tenth, hundredth, or thousandth

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Multiply a decimal by multiples of 10, 100, or 1000

Percents
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Find a percent of a number

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Write a decimal or fraction as a percent or vice versa

Place Value, Expanded and Standard Notation
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Understand and identify the place value and value of each digit in numerals through the billions

·        Write the word name for a decimal and vice versa

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Write numerals in expanded form through the hundred billions

Ordering, Equalities and Inequalities

·        Order numbers from least to greatest and greatest to least

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Compare and order numbers through the billions

·        Order decimals and fractions to the hundred thousandths

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Identify the greater or lesser of 2 integers

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Ordering integers that include fractions and wholes

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Translate verbal statements into equations (all four operations; several operations)

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Ordering exponential values

Exponents and Scientific Notation
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Write whole number in exponential form and compute the power of a number

New Vocabulary in this Range: missing number, pentagon, simplest fraction, biggest, hundredths, one less, decimal numeral, squared, divisible, inequality, expanded numeral, equivalent, point, standard numeral, sequence

New Signs and Symbols: + used as positive symbol, - used as negative symbol

 

RIT scores between 211 and 220

Whole Numbers

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Understand and use rules of divisibility

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Identify the greatest common factor of two whole numbers: list the factors or prime factorization

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Identify the greatest common factor and least common multiple of two whole numbers

Fractions, Ratio and Proportion

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Write improper fractions from picture presentations

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Change a fractional numeral to its simplest form (lowest terms)

Decimals

·        Round monetary amounts to the nearest single coin or bill which could be used to pay for a purchase up to and including $20.00

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Write the decimal equivalent of a fraction and label as repeating or terminating

Percents

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Express a fraction as a decimal and as a percent

Ordering, Equalities and Inequalities

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Compare and order fractions with the same denominator and with different denominators

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Order decimals to thousandths; identify the greater or lesser of two decimals to thousandths

Exponents and Scientific Notation

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Order of “powers”

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Write a whole number or a decimal in scientific notation

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Write a number expressed in scientific notation in standard form

New Vocabulary in this Range: counting number, portion, fractional part, lowest terms, reciprocal, order, scientific notation, prime factorization, not prime, factor tree, common multiples, greatest common denominator, equivalent, nearest dollar

New Signs and Symbols: square root symbol

 

RIT scores between 221 and 230

Fractions, Ratio and Proportion
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Model and write numerical fractions

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Understand the concept of ratio using concrete and pictorial models

·        Identify the least common denominator for 3 or more fractions: list the multiples or prime factorization

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Determine if a pair of ratios is equal or not equal using the equivalent fractions method

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Write the missing number in 2 equivalent ratios

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Solve proportions using the cross product method

Decimals
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Identify and order decimal and fractional coordinates on a number line

Percents
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Write a ratio (fraction) as a percent and a percent as a ratio (fraction): denominators of 100

Integers

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Understand the meaning of integers

Place Value, Expanded and Standard Notation

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Match word names to numerals to the hundred thousands in decimals

Ordering, Equalities and Inequalities
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Order a set of integers from least to greatest

Exponents and Scientific Notation
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Identify and use powers of 10

Square Roots
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Evaluate expressions using square roots

New Vocabulary in this Range: always true, proportion, multiply, between, tens digit, standard numeral, ratio

New Signs and Symbols: none

 

RIT scores between 231 and 240

Fractions, Ratio and Proportion
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Define ratio

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Write ratios in a variety of ways

Decimals
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Write a decimal or mixed decimal for a fraction

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Write a whole number or a decimal in scientific notation (negative exponents)

Place Value, Expanded and Standard Notation

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Write numerals in expanded form through the billions

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Understand and identify place value and value of each digit in numerals through the hundred billions

Exponents and Scientific Notation

·        Evaluate expressions using the order of operations that include exponents

·        Find products by applying rules for exponents

Square Roots
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Identify perfect squares in a list of numbers and calculate the positive square root of a perfect square

New Vocabulary in this Range: none

New Signs and Symbols: none

 

RIT scores between 241 and 250

Square Roots
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Evaluate expressions using square roots

New Vocabulary in this Range: Base ten, prime factors

New Signs and Symbols: none

 

RIT scores between 251 and 260

Exponents and Scientific Notation
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Evaluate powers with a negative exponent

New Vocabulary in this Range: none

New Signs and Symbols: none

 

RIT scores between 261 and 270

Percents
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Change a percent to a fraction (including mixed numbers)

Square Roots
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Understand properties of square roots

Irrational Numbers
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Define irrational numbers

New Vocabulary in this Range: infinite non-repeating decimal

New Signs and Symbols: none

 

RIT scores between 271 and 280

Exponents and Scientific Notation
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Evaluate power of zero

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Identify the lowest common multiple of numbers in their prime factored state

Set Notation

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Use inequalities to represent set notation

New Vocabulary in this Range: none

New Signs and Symbols: none

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