A student has 1 hundred block and 23 ones blocks. Does this represent the number 123? Explain your answer.

Yes, because 23 ones blocks can be regrouped into 2 tens blocks and 3 ones blocks, resulting in 1 hundred, 2 tens, and 3 ones.

Representing 123

5th Grade•45 minutes

I can represent the number 123 using base-ten blocks and expanded form.

This lesson includes 7 practice questions to reinforce learning.

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1. Draw base-ten blocks to represent the number 123. Label each block (hundreds, tens, ones).

2. Write the number 123 in expanded form.

3. Explain how the digits in the number 123 relate to the base-ten blocks.

...and 4 more questions

Composing Numbers & Decomposing Numbers! | Mini Math Movies | Scratch Garden

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