Estimating Sums and Differences (Ex. 2)

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1. Question 1

   Multiple choice

   Best estimate for 623 - 198?

2. Question 2

   Multiple choice

   What is a good estimate for 76 + 24?

3. Question 3

   Multiple choice

   Estimate 531 + 268.

4. Question 4

   Sequence

   200-50=150, 300-50=250, 400-50=___, 500-50=450.

5. Question 5

   True or false

   A good estimate for 312 + 489 is 800.

More exercises in this module

• Inverse Operations: Check Your Answers (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)

• Estimating Sums and Differences (Ex. 1)