Estimating Sums and Differences (Ex. 3)

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1. Question 1

   Multiple choice

   Best estimate for 847 - 352?

2. Question 2

   Multiple choice

   Estimate 43 + 58 to the nearest 10.

3. Question 3

   Multiple choice

   Best estimate for 490 + 310.

4. Question 4

   Sequence

   100+100=200, 200+100=300, 300+100=___, 400+100=500.

5. Question 5

   True or false

   Estimating is useful for checking if an answer is reasonable.

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)