Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 720 · 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. 1.392 − 76 =
2. 2.255 − 16 =
3. 3.398 − 66 =
4. 4.560 − 57 =
5. 5.104 − 87 =
6. 6.439 − 19 =
7. 7.454 − 37 =
8. 8.99 − 49 =
9. 9.378 − 57 =
10. 10.80 − 76 =
11. 11.369 − 16 =
12. 12.213 − 58 =
13. 13.196 − 18 =
14. 14.128 − 36 =
15. 15.326 − 87 =
16. 16.359 − 77 =
17. 17.129 − 29 =
18. 18.112 − 17 =
19. 19.276 − 77 =
20. 20.476 − 46 =
21. 21.134 − 79 =
22. 22.293 − 17 =
23. 23.139 − 16 =
24. 24.155 − 88 =
25. 25.116 − 69 =
26. 26.196 − 66 =
27. 27.250 − 46 =
28. 28.89 − 86 =
29. 29.258 − 16 =
30. 30.189 − 96 =
31. 31.563 − 56 =
32. 32.408 − 58 =
33. 33.319 − 77 =
34. 34.434 − 37 =
35. 35.544 − 76 =
36. 36.390 − 66 =
37. 37.56 − 16 =
38. 38.311 − 59 =
39. 39.408 − 56 =
40. 40.523 − 17 =

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