Multiplying by tens

Grade 3 · Level 2 · Sheet 1

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the answers

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1.
8×70=?
2.
5×60=?
3.
7×50=?
4.
2×30=?
5.
6×40=?
6.
4×70=?
7.
2×60=?
8.
6×80=?
9.
4×10=?
10.
7×60=?
11.
50×10
12.
9×70=?

Show the answer key

1.560
2.300
3.350
4.60
5.240
6.280
7.120
8.480
9.40
10.420
11.500
12.630

The mistakes behind most wrong answers

A wrong answer in multiplying by tens is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.

10×70=?
The answer is 700. A child who answers 80 probably added instead of multiplying.
3×20=?
The answer is 60. A child who answers 63 probably counted one group too many or too few.

In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.

Answer key · Multiplying by tens · Level 2 · Sheet 1

The mistakes behind most wrong answers