- Math
- Estimation
- Age 8-10
-
level: 3
- English
คำแนะนำของผู้เขียน
Estimates the sum of two numbers with three to four
digits with reasonable results.
Estimating Sums and Differences
คำแนะนำของผู้เขียน
Estimates the sum of two numbers with three to four
digits with reasonable results.
