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

### Other lessons similar to this one

### 2 Content Standards are aligned with this lesson

Major StandardsSupporting StandardsAdditional Standards

Standard 2.NBT.B.7Add 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

### Prerequisites for 2.NBT.B.7

### 2nd Grade

2.NBT.A.1Understand 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:

2.NBT.A.1.A100 can be thought of as a bundle of ten tens - called a "hundred."

2.NBT.A.1.BThe 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

The Understood offers evidence-based strategies that benefit all students, especially those with learning differences and attention issues.