Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 751 · 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. 1.285 − 36 =
2. 2.447 − 99 =
3. 3.540 − 47 =
4. 4.451 − 46 =
5. 5.458 − 78 =
6. 6.84 − 57 =
7. 7.526 − 86 =
8. 8.200 − 48 =
9. 9.466 − 46 =
10. 10.205 − 27 =
11. 11.422 − 16 =
12. 12.254 − 26 =
13. 13.135 − 78 =
14. 14.205 − 57 =
15. 15.520 − 87 =
16. 16.249 − 36 =
17. 17.445 − 69 =
18. 18.586 − 38 =
19. 19.409 − 76 =
20. 20.189 − 77 =
21. 21.101 − 58 =
22. 22.555 − 98 =
23. 23.541 − 17 =
24. 24.522 − 27 =
25. 25.469 − 48 =
26. 26.243 − 56 =
27. 27.371 − 88 =
28. 28.526 − 88 =
29. 29.158 − 16 =
30. 30.52 − 49 =
31. 31.488 − 66 =
32. 32.154 − 77 =
33. 33.138 − 79 =
34. 34.311 − 77 =
35. 35.180 − 99 =
36. 36.105 − 96 =
37. 37.152 − 87 =
38. 38.165 − 86 =
39. 39.111 − 67 =
40. 40.428 − 66 =

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