Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 660 · 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. 1.74 − 58 =
2. 2.254 − 36 =
3. 3.69 − 39 =
4. 4.117 − 79 =
5. 5.349 − 59 =
6. 6.228 − 67 =
7. 7.571 − 86 =
8. 8.254 − 38 =
9. 9.116 − 38 =
10. 10.162 − 98 =
11. 11.453 − 18 =
12. 12.219 − 47 =
13. 13.99 − 89 =
14. 14.131 − 78 =
15. 15.534 − 39 =
16. 16.516 − 26 =
17. 17.279 − 86 =
18. 18.292 − 89 =
19. 19.558 − 28 =
20. 20.513 − 98 =
21. 21.240 − 67 =
22. 22.122 − 38 =
23. 23.243 − 26 =
24. 24.246 − 46 =
25. 25.76 − 29 =
26. 26.63 − 18 =
27. 27.573 − 59 =
28. 28.157 − 26 =
29. 29.284 − 56 =
30. 30.465 − 86 =
31. 31.415 − 67 =
32. 32.187 − 89 =
33. 33.414 − 77 =
34. 34.86 − 58 =
35. 35.335 − 17 =
36. 36.400 − 97 =
37. 37.508 − 77 =
38. 38.154 − 78 =
39. 39.433 − 89 =
40. 40.126 − 49 =

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