Estimation and rounding
Intermediate · 10 levels, 10 problems each.
This browser will not save progress — private browsing or blocked site data. Every level still works, but stars will not be kept.
- 01 Intermediate
Three-digit warm-up
10 problems · 2 min - 02 Intermediate
Four digits to the nearest ten
10 problems · 3 min - 03 Intermediate
Nearest hundred, four digits
10 problems · 3 min - 04 Intermediate
Nearest thousand
10 problems · 3 min - 05 Intermediate
Nearest thousand, on the line
10 problems · 3 min - 06 Intermediate
Any place, four digits
10 problems · 3 min - 07 Intermediate
Any place, on the line
10 problems · 3 min - 08 Intermediate
Five digits
10 problems · 3 min - 09 Intermediate
Nearest ten thousand
10 problems · 3 min - 10 Intermediate
Five-digit review
10 problems · 3 min