Mental Addition and Subtraction

Answer Key - Grade 4 Math Worksheet - Challenge Me

Add or subtract in your head.

1. 1.

   12,000 + 1,800 = ____

   13,800
2. 2.

   5,800 − 4,400 = ____

   1,400
3. 3.

   6,500 + 9,500 = ____

   16,000
4. 4.

   6,000 − 5,000 = ____

   1,000
5. 5.

   8,500 + 2,500 = ____

   11,000
6. 6.

   9,600 − 3,400 = ____

   6,200
7. 7.

   8,300 + 6,200 = ____

   14,500
8. 8.

   7,700 − 4,800 = ____

   2,900
9. 9.

   7,600 + 1,500 = ____

   9,100
10. 10.

    9,000 − 3,600 = ____

    5,400
11. 11.

    7,200 + 2,200 = ____

    9,400
12. 12.

    6,600 − 4,000 = ____

    2,600