4-Digit Mental Addition and Subtraction Worksheet

Speed calculation lesson 16: Split and join: 4-digit sums · Set 196 · 40 questions

The fast method (Split and join): Split each 4-digit number into two 2-digit halves: 4768 → 47|68. Work out the left halves and the right halves on their own. Adding: a right half of 100 or more carries 1 to the left half. Subtracting: right half too small? Borrow 1 from the left half — it is worth 100 on the right.

1. 1.8471 − 5760 =
2. 2.7724 − 4856 =
3. 3.6748 − 1523 =
4. 4.7638 + 5482 =
5. 5.7387 − 4665 =
6. 6.4925 + 6571 =
7. 7.7479 − 1469 =
8. 8.7103 − 1168 =
9. 9.5199 + 7178 =
10. 10.3209 + 8222 =
11. 11.6831 + 5678 =
12. 12.6865 − 3865 =
13. 13.7696 − 3886 =
14. 14.2567 + 5470 =
15. 15.8637 + 1831 =
16. 16.7835 − 7808 =
17. 17.3237 + 2936 =
18. 18.4871 − 2712 =
19. 19.6756 − 6017 =
20. 20.8090 + 4670 =
21. 21.6614 + 2653 =
22. 22.6432 − 2902 =
23. 23.2767 + 4190 =
24. 24.8783 + 5013 =
25. 25.4317 − 3862 =
26. 26.8974 + 2768 =
27. 27.2374 + 7341 =
28. 28.2673 + 7844 =
29. 29.7653 + 1994 =
30. 30.5822 − 4346 =
31. 31.3492 + 8738 =
32. 32.6704 + 2256 =
33. 33.7676 + 7949 =
34. 34.2293 − 1566 =
35. 35.8924 + 6314 =
36. 36.3971 + 2111 =
37. 37.8269 − 3089 =
38. 38.2732 + 7041 =
39. 39.7240 + 1590 =
40. 40.1198 + 5863 =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths