Mental Arithmetic
Level
1
2
3
5/10
About
how much to pay?
≈
$
52
\approx \$52
≈
$52
≈
$
48
\approx \$48
≈
$48
≈
$
40
\approx \$40
≈
$40
≈
$
44
\approx \$44
≈
$44
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