Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 960 · 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. 1.116 − 77 =
2. 2.518 − 19 =
3. 3.92 − 59 =
4. 4.99 − 97 =
5. 5.599 − 98 =
6. 6.134 − 69 =
7. 7.165 − 59 =
8. 8.243 − 59 =
9. 9.312 − 47 =
10. 10.265 − 76 =
11. 11.484 − 18 =
12. 12.183 − 99 =
13. 13.296 − 18 =
14. 14.445 − 29 =
15. 15.544 − 38 =
16. 16.528 − 26 =
17. 17.300 − 86 =
18. 18.412 − 67 =
19. 19.356 − 17 =
20. 20.135 − 69 =
21. 21.460 − 69 =
22. 22.397 − 37 =
23. 23.167 − 99 =
24. 24.297 − 37 =
25. 25.421 − 17 =
26. 26.416 − 19 =
27. 27.124 − 56 =
28. 28.567 − 88 =
29. 29.165 − 68 =
30. 30.88 − 87 =
31. 31.133 − 26 =
32. 32.541 − 77 =
33. 33.484 − 66 =
34. 34.244 − 97 =
35. 35.68 − 47 =
36. 36.105 − 66 =
37. 37.394 − 49 =
38. 38.508 − 78 =
39. 39.559 − 26 =
40. 40.383 − 56 =

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