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Unit 2, Lesson 2

Race to 0

Massachusetts Department of Elementary and Secondary Education 60 min(s)

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Other lessons from Unit 2 in Grade 2 by Massachusetts Department of Elementary and Secondary Education

Previous Lesson

Unit 2, Lesson 1

Race to 200

Massachusetts Department of Elementary and Secondary Education

Next Lesson

Unit 2, Lesson 3

Library Game

Massachusetts Department of Elementary and Secondary Education

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Unit 4, Lesson 6

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Unit 1, Lesson 2

Counting by 10s

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1 Content Standard is aligned with this lesson

2.NBT.B.7

Major StandardsSupporting StandardsAdditional Standards

Standard 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.

Part of Major Cluster 2.NBT.B

4 Math Practice Standards are aligned with this lesson

Model with mathematics.

Attend to precision.

Look for and make use of structure.

Look for and express regularity in repeated reasoning.

Prerequisites for 2.NBT.B.7

2nd Grade

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. Understand the following as special cases:

100 can be thought of as a bundle of ten tens - called a "hundred."

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).

Upcoming Standards for 2.NBT.B.7

2nd Grade

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

3rd Grade

Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

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