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Mama L [17]
3 years ago
9

How to do this problem

Mathematics
1 answer:
Maslowich3 years ago
3 0

Answer:

1 tens   3 ones

Step-by-step explanation:

All you do is count the numbers in the place value chart.

Since 31-18=13, all you do is count 10+1+1+1=13.

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