Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 663 · 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. 1.180 − 86 =
2. 2.165 − 29 =
3. 3.574 − 88 =
4. 4.164 − 77 =
5. 5.232 − 88 =
6. 6.297 − 97 =
7. 7.205 − 98 =
8. 8.415 − 46 =
9. 9.531 − 36 =
10. 10.443 − 89 =
11. 11.429 − 19 =
12. 12.354 − 36 =
13. 13.207 − 47 =
14. 14.114 − 29 =
15. 15.101 − 26 =
16. 16.196 − 79 =
17. 17.119 − 66 =
18. 18.294 − 48 =
19. 19.67 − 36 =
20. 20.568 − 47 =
21. 21.469 − 86 =
22. 22.572 − 59 =
23. 23.533 − 27 =
24. 24.322 − 66 =
25. 25.573 − 39 =
26. 26.553 − 56 =
27. 27.565 − 76 =
28. 28.136 − 39 =
29. 29.407 − 69 =
30. 30.425 − 66 =
31. 31.216 − 46 =
32. 32.423 − 38 =
33. 33.476 − 47 =
34. 34.339 − 77 =
35. 35.73 − 57 =
36. 36.263 − 38 =
37. 37.436 − 88 =
38. 38.276 − 27 =
39. 39.530 − 58 =
40. 40.243 − 66 =

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