Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 919 · 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. 1.229 − 28 =
2. 2.114 − 28 =
3. 3.456 − 77 =
4. 4.433 − 38 =
5. 5.114 − 36 =
6. 6.207 − 56 =
7. 7.202 − 76 =
8. 8.297 − 98 =
9. 9.462 − 57 =
10. 10.129 − 98 =
11. 11.268 − 79 =
12. 12.400 − 68 =
13. 13.171 − 96 =
14. 14.178 − 26 =
15. 15.395 − 87 =
16. 16.433 − 98 =
17. 17.344 − 59 =
18. 18.581 − 28 =
19. 19.331 − 58 =
20. 20.133 − 99 =
21. 21.369 − 76 =
22. 22.195 − 18 =
23. 23.593 − 58 =
24. 24.373 − 77 =
25. 25.473 − 28 =
26. 26.409 − 18 =
27. 27.107 − 17 =
28. 28.576 − 38 =
29. 29.397 − 16 =
30. 30.350 − 86 =
31. 31.117 − 97 =
32. 32.353 − 77 =
33. 33.377 − 29 =
34. 34.599 − 16 =
35. 35.160 − 59 =
36. 36.416 − 76 =
37. 37.344 − 37 =
38. 38.589 − 58 =
39. 39.358 − 38 =
40. 40.117 − 26 =

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