If you are given two number cards, 80 and 2, and asked to put the numbers together, what number does that give you?
82
Look at problem B. What are the missing numbers? How do you know?
645, 650, 660; you count by 5s.
How many hundreds, tens, and ones are in 645?
6 hundreds, 4 tens, and 5 ones.
Look at problem C. What number do you see? How do you know?
364; it has 3 hundreds, 6 tens, and 4 ones.
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