Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 676 · 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. 1.62 − 17 =
2. 2.116 − 29 =
3. 3.516 − 16 =
4. 4.244 − 16 =
5. 5.267 − 26 =
6. 6.365 − 67 =
7. 7.221 − 47 =
8. 8.428 − 66 =
9. 9.313 − 29 =
10. 10.273 − 59 =
11. 11.179 − 46 =
12. 12.114 − 39 =
13. 13.555 − 99 =
14. 14.71 − 16 =
15. 15.498 − 39 =
16. 16.494 − 46 =
17. 17.135 − 56 =
18. 18.394 − 19 =
19. 19.284 − 79 =
20. 20.397 − 38 =
21. 21.134 − 76 =
22. 22.261 − 27 =
23. 23.141 − 79 =
24. 24.221 − 27 =
25. 25.400 − 26 =
26. 26.128 − 99 =
27. 27.255 − 17 =
28. 28.257 − 67 =
29. 29.215 − 77 =
30. 30.194 − 16 =
31. 31.140 − 26 =
32. 32.322 − 38 =
33. 33.591 − 99 =
34. 34.266 − 18 =
35. 35.112 − 99 =
36. 36.237 − 59 =
37. 37.223 − 68 =
38. 38.275 − 46 =
39. 39.310 − 76 =
40. 40.152 − 86 =

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