Mental Arithmetic
Level
1
2
3
8/10
About
how much is this?
$151 + $29 + $18
≈
$
220
\approx \$220
≈
$220
≈
$
200
\approx \$200
≈
$200
≈
$
230
\approx \$230
≈
$230
≈
$
210
\approx \$210
≈
$210
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