2nd Grade: Number and Operations in Base Ten (2.NBT)

2nd Grade Math 2nd Grade: Number and Operations in Base Ten (2.NBT)

Number and Operations in Base Ten (2.NBT)

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2.NBT.A.1

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones.

Add Hundreds by One-Digit

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2.NBT.A.1a

Understand 100 can be thought of as a bundle of ten tens — called a “hundred.”

Scheduled for 10/02/2024

2.NBT.A.1b

Understand the numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).

2.NBT.A.2

Count within 1000; skip-count by 5s, 10s, and 100s.

Skip Counting by 10 or 100

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2.NBT.A.3

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

Standard to Expanded form within 1000

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Word to Standard form within 1000

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Word to Expanded form within 1000

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2.NBT.A.4

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

Compare Three-Digit Numbers

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2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Add Two-Digit number by One-Digit

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Subtract Two-Digit number
by One-Digit

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Add Two-Digit number
by Two-Digits

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Subtract Two-Digit number
by Two-Digits

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2.NBT.B.6

Add up to four two-digit numbers using strategies based on place value and properties of operations.

Scheduled for 10/09/2024

2.NBT.B.7

Add and subtract within 1000, 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 to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.