Mental Arithmetic
Level
1
2
3
9/10
About
how much is this?
$131 + $42 + $99 + $11
≈
$
240
\approx \$240
≈
$240
≈
$
220
\approx \$220
≈
$220
≈
$
280
\approx \$280
≈
$280
≈
$
260
\approx \$260
≈
$260
Prev.
Check answer
Skip
Help?
