What did Greg do wrong when he got 32 as an answer when he was suppose to add 3 hundreds plus 2 tens

3 hundreds plus 2 tens and Greg got the answer 32. What did he do wrong?
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He missed the zero off the end. It should have been 320. The zero means no units or no ones. Greg forgot to say there were no ones, because the ones value wasn’t mentioned in the question he was given. The answer he gave makes it look like there were 2 ones.

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