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Math

New York Math

Grade 1: Number and Operations in Base Ten

Extend the counting sequence.

NY-1.NBT.1

Not covered
Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.
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Understand place value.

NY-1.NBT.2

Understand that the two digits of a two-digit number represent amounts of tens and ones.

NY-1.NBT.2.a

Not covered
Understand 10 can be thought of as a bundle of ten ones, called a "ten".
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NY-1.NBT.2.b

Not covered
Understand the numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
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NY-1.NBT.2.c

Not covered
Understand the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
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NY-1.NBT.3

Fully covered
Compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.

Use place value understanding and properties of operations to add and subtract.

NY-1.NBT.4

Partially covered
Add within 100, including: a two-digit number and a one-digit number, a two-digit number and a multiple of 10. Use concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones, and sometimes it is necessary to compose a ten. Relate the strategy to a written representation and explain the reasoning used.

NY-1.NBT.5

Not covered
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
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NY-1.NBT.6

Not covered
Subtract multiples of 10 from multiples of 10 in the range 10-90 using: concrete models or drawings, and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. Relate the strategy used to a written representation and explain the reasoning.
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