Mental Addition and Subtraction

Answer Key - Grade 4 Math Worksheet

Add or subtract in your head.

1. 1.

   5,000 + 2,000 = ____

   7,000
2. 2.

   3,100 − 2,300 = ____

   800
3. 3.

   4,000 + 2,300 = ____

   6,300
4. 4.

   6,000 − 2,000 = ____

   4,000
5. 5.

   7,200 + 1,400 = ____

   8,600
6. 6.

   6,900 − 1,500 = ____

   5,400
7. 7.

   1,800 + 3,500 = ____

   5,300
8. 8.

   7,600 − 5,800 = ____

   1,800
9. 9.

   4,200 + 4,000 = ____

   8,200
10. 10.

    9,000 − 1,000 = ____

    8,000
11. 11.

    3,500 + 3,600 = ____

    7,100
12. 12.

    7,000 − 5,000 = ____

    2,000