Inverse Operations to Check Answers (Ex. 3)

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1. Question 1

   Multiple choice

   A number plus 3,400 equals 7,850. What is the number? Check with inverse.

2. Question 2

   Multiple choice

   A number minus 2,136 equals 5,428. What is the number?

3. Question 3

   Multiple choice

   Which family of facts is correct for 3,000 + 4,000 = 7,000?

4. Question 4

   Sequence

   ___ + 2,000 = 7,000; ___ + 3,000 = 7,000 → these give: 5,000 and ___.

5. Question 5

   True or false

   You can write four facts using the numbers 2,500; 4,500; and 7,000.

More exercises in this module

• Column Addition with Regrouping (Ex. 1)

• Estimating with Rounding (Ex. 2)

• Four-Digit Subtraction (Ex. 3)

• Estimating with Rounding (Ex. 3)

• Four-Digit Addition (Ex. 1)

• Inverse Operations to Check Answers (Ex. 1)