1. Look at problem A. What are the missing numbers?  

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   78, 81, and 82.

2. If you are given two number cards, 80 and 2, and asked to put the numbers together, what number does that give you?

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   82

3. How many tens and ones are in 78?

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   7 tens and 8 ones.

4. Look at problem B. What are the missing numbers? How do you know?

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   645, 650, 660; you count by 5s.

5. How many hundreds, tens, and ones are in 645?

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   6 hundreds, 4 tens, and 5 ones.

6. Look at problem C. What number do you see? How do you know?  

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   364; it has 3 hundreds, 6 tens, and 4 ones.

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