Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 316 · 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. 1.216 − 76 =
2. 2.314 − 57 =
3. 3.102 − 97 =
4. 4.319 − 28 =
5. 5.569 − 67 =
6. 6.55 − 48 =
7. 7.387 − 86 =
8. 8.513 − 37 =
9. 9.455 − 99 =
10. 10.221 − 67 =
11. 11.556 − 99 =
12. 12.513 − 29 =
13. 13.315 − 57 =
14. 14.243 − 66 =
15. 15.340 − 59 =
16. 16.233 − 16 =
17. 17.466 − 67 =
18. 18.107 − 88 =
19. 19.79 − 77 =
20. 20.447 − 27 =
21. 21.573 − 36 =
22. 22.196 − 66 =
23. 23.340 − 68 =
24. 24.171 − 66 =
25. 25.319 − 37 =
26. 26.102 − 67 =
27. 27.203 − 58 =
28. 28.395 − 28 =
29. 29.145 − 99 =
30. 30.247 − 37 =
31. 31.376 − 68 =
32. 32.55 − 16 =
33. 33.461 − 38 =
34. 34.437 − 47 =
35. 35.586 − 49 =
36. 36.163 − 86 =
37. 37.111 − 78 =
38. 38.187 − 87 =
39. 39.107 − 28 =
40. 40.361 − 69 =

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