Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 177 · 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. 1.524 − 36 =
2. 2.461 − 77 =
3. 3.305 − 29 =
4. 4.210 − 98 =
5. 5.53 − 28 =
6. 6.481 − 26 =
7. 7.504 − 86 =
8. 8.89 − 68 =
9. 9.449 − 47 =
10. 10.595 − 79 =
11. 11.484 − 36 =
12. 12.450 − 58 =
13. 13.141 − 57 =
14. 14.501 − 47 =
15. 15.485 − 28 =
16. 16.56 − 39 =
17. 17.90 − 28 =
18. 18.55 − 36 =
19. 19.121 − 16 =
20. 20.147 − 48 =
21. 21.375 − 39 =
22. 22.262 − 27 =
23. 23.176 − 16 =
24. 24.415 − 67 =
25. 25.189 − 38 =
26. 26.567 − 99 =
27. 27.164 − 18 =
28. 28.137 − 99 =
29. 29.195 − 38 =
30. 30.129 − 28 =
31. 31.208 − 99 =
32. 32.333 − 66 =
33. 33.106 − 26 =
34. 34.303 − 58 =
35. 35.595 − 68 =
36. 36.141 − 98 =
37. 37.377 − 69 =
38. 38.438 − 19 =
39. 39.318 − 99 =
40. 40.109 − 16 =

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