Addition & Subtraction to 10,000 (4.N3) · Page 6 of 14
➕ Estimating Sums
Using the front-end strategy to estimate sums
💡 Tip for parents: The front-end strategy uses only the biggest place: 3,456 + 2,345 is about 3,000 + 2,000 = 5,000. Estimates are perfect for checking if an exact answer is reasonable!
Score: 0 / 55 to go
- Question 1
Use the front-end strategy to estimate 3,456 + 2,345.
- Question 2
Use the front-end strategy to estimate 4,567 + 3,210.
- Question 3
Use the front-end strategy to estimate 2,345 + 1,678.
- Question 4
Use the front-end strategy to estimate 5,432 + 2,198.
- Question 5
When is an estimate good enough instead of an exact answer?