Checking Subtraction

I know how to add and subtract, but sometimes I make careless mistakes. I need an easy way to check my answers.
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We can use addition to check subtraction.

We can use addition to
check subtraction.

Type the correct numerals in the boxes.

Does it match?

Type the correct numerals in the boxes.

Does it match?

Now that I know an easy way to check my subtraction, I bet I’ll make better grades on my math papers!

Checking answers makes subtraction easy!