Estimating Sums and Differences (Ex. 1)

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1. Question 1

   Multiple choice

   Estimate 48 + 53 by rounding to the nearest 10.

2. Question 2

   Multiple choice

   Best estimate for 389 + 212?

3. Question 3

   Multiple choice

   Estimate 97 - 41.

4. Question 4

   Sequence

   Estimated totals: 150+250=400, 250+250=500, 350+250=___, 450+250=700.

5. Question 5

   True or false

   A good estimate for 298 + 101 is 400.

More exercises in this module

• Inverse Operations: Check Your Answers (Ex. 2)

• Estimating Sums and Differences (Ex. 2)

• Word Problems: Addition and Subtraction (Ex. 3)

• Mental Addition and Subtraction (Ex. 1)

• Inverse Operations: Check Your Answers (Ex. 3)

• Word Problems: Addition and Subtraction (Ex. 2)