Composing and Decomposing Numbers Worksheet

Composing and Decomposing Numbers

Read each question carefully and follow the instructions to compose or decompose numbers.

Decompose each number into its hundreds, tens, and ones.

1. 345 =   hundreds +   tens +   ones

2. 709 =   hundreds +   tens +   ones

3. 120 =   hundreds +   tens +   ones

4. 58 =   hundreds +   tens +   ones

Compose the numbers from the given hundreds, tens, and ones.

1. 2 hundreds + 5 tens + 3 ones =  

2. 8 hundreds + 0 tens + 7 ones =  

3. 4 hundreds + 6 tens + 0 ones =  

4. 0 hundreds + 9 tens + 1 one =  

5. Look at the number line below. What number is highlighted? Decompose it into tens and ones.

6. Which of the following shows the number 672 decomposed correctly?

7. Sarah has 4 hundreds blocks, 12 tens rods, and 5 ones cubes. What number can she compose? Decompose your answer into standard hundreds, tens, and ones.

8. The number 503 can be decomposed as 5 hundreds + 3 tens + 0 ones.