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Estimation and Rounding
Develop estimation and rounding skills together. This path pairs rounding practice with estimation exercises at each grade level, showing how rounding is the key tool for making quick, reasonable estimates.
6 stepsBest for: Grades 2-4
1
Step 1 · Grade 2
Rounding to the Nearest 10
Learn the rules for rounding numbers to the nearest 10 as the first step in estimation.
2
Step 2 · Grade 2
Estimating Sums
Use rounding to the nearest 10 to estimate addition results quickly and check reasonableness.
3
Step 3 · Grade 3
Rounding to 10 and 100
Extend rounding skills to the nearest 100 and practice mixed rounding targets.
4
Step 4 · Grade 3
Estimating Sums and Differences
Estimate sums to the nearest 10 and 100, and learn to estimate differences between numbers.
5
Step 5 · Grade 4
Rounding to 1,000
Round numbers to the nearest 1,000 and practice with a mix of rounding targets.
6
Step 6 · Grade 4
Estimating All Operations
Apply estimation to addition, subtraction, multiplication, and mixed operations for quick mental math.