Mental Arithmetic
Level
1
2
3
6/10
About
how much is this?
$102 + $31
≈
$
140
\approx \$140
≈
$140
≈
$
130
\approx \$130
≈
$130
≈
$
150
\approx \$150
≈
$150
≈
$
160
\approx \$160
≈
$160
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