Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 783 · 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. 1.160 − 68 =
2. 2.232 − 87 =
3. 3.560 − 27 =
4. 4.366 − 79 =
5. 5.191 − 96 =
6. 6.147 − 59 =
7. 7.252 − 39 =
8. 8.480 − 16 =
9. 9.491 − 78 =
10. 10.572 − 48 =
11. 11.277 − 36 =
12. 12.132 − 36 =
13. 13.217 − 56 =
14. 14.65 − 18 =
15. 15.560 − 36 =
16. 16.273 − 87 =
17. 17.122 − 87 =
18. 18.84 − 16 =
19. 19.270 − 37 =
20. 20.475 − 19 =
21. 21.402 − 79 =
22. 22.430 − 49 =
23. 23.454 − 28 =
24. 24.395 − 36 =
25. 25.375 − 17 =
26. 26.146 − 79 =
27. 27.270 − 69 =
28. 28.487 − 87 =
29. 29.526 − 16 =
30. 30.452 − 26 =
31. 31.255 − 46 =
32. 32.384 − 89 =
33. 33.530 − 69 =
34. 34.381 − 47 =
35. 35.133 − 49 =
36. 36.327 − 69 =
37. 37.232 − 57 =
38. 38.422 − 17 =
39. 39.203 − 97 =
40. 40.475 − 98 =

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