Mental Arithmetic
Level
1
2
3
9/10
About
how much to pay?
≈
$
150
\approx \$150
≈
$150
≈
$
160
\approx \$160
≈
$160
≈
$
140
\approx \$140
≈
$140
≈
$
170
\approx \$170
≈
$170
Prev.
Check answer
Skip
Help?
