Mental Arithmetic
Level
1
2
3
3/10
About
how much to pay?
≈
$
6
\approx \$6
≈
$6
≈
$
7
\approx \$7
≈
$7
≈
$
9
\approx \$9
≈
$9
≈
$
8
\approx \$8
≈
$8
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