Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 104 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.320 − 27 =
2. 2.378 − 18 =
3. 3.203 − 88 =
4. 4.357 − 18 =
5. 5.119 − 26 =
6. 6.361 − 49 =
7. 7.441 − 56 =
8. 8.402 − 88 =
9. 9.282 − 86 =
10. 10.140 − 18 =
11. 11.163 − 88 =
12. 12.92 − 38 =
13. 13.503 − 88 =
14. 14.225 − 69 =
15. 15.414 − 78 =
16. 16.111 − 46 =
17. 17.57 − 27 =
18. 18.501 − 96 =
19. 19.349 − 46 =
20. 20.314 − 86 =
21. 21.286 − 49 =
22. 22.579 − 97 =
23. 23.293 − 99 =
24. 24.397 − 56 =
25. 25.176 − 56 =
26. 26.500 − 68 =
27. 27.455 − 56 =
28. 28.498 − 36 =
29. 29.183 − 98 =
30. 30.352 − 37 =
31. 31.501 − 29 =
32. 32.349 − 86 =
33. 33.170 − 39 =
34. 34.230 − 59 =
35. 35.587 − 68 =
36. 36.479 − 96 =
37. 37.187 − 16 =
38. 38.113 − 66 =
39. 39.545 − 17 =
40. 40.333 − 77 =

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