page 1                                              htm.math

For each exercise estimate the sum. Then find the sum

Adding whole numbers

1. On Monday 5,200 cars paid the toll as they crossed the bridge.

On Tuesday 6,700 cars paid the toll. On Wednesday 7,250 cars

paid the toll. How many cars in all paid the toll on all three days?

2. The sum of which two numbers is closest to 6,000?

1,400 3,660 4,500

3. 6,234 + 7,284

4. 2,456+352+221

5. 1,480+437+504