Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 707 · 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. 1.88 − 68 =
2. 2.201 − 66 =
3. 3.73 − 17 =
4. 4.528 − 56 =
5. 5.297 − 76 =
6. 6.469 − 17 =
7. 7.351 − 79 =
8. 8.290 − 59 =
9. 9.515 − 98 =
10. 10.357 − 97 =
11. 11.475 − 27 =
12. 12.61 − 46 =
13. 13.199 − 99 =
14. 14.182 − 88 =
15. 15.133 − 36 =
16. 16.167 − 96 =
17. 17.319 − 97 =
18. 18.411 − 88 =
19. 19.375 − 16 =
20. 20.339 − 16 =
21. 21.411 − 18 =
22. 22.561 − 26 =
23. 23.398 − 86 =
24. 24.189 − 16 =
25. 25.595 − 98 =
26. 26.170 − 76 =
27. 27.444 − 97 =
28. 28.290 − 79 =
29. 29.518 − 88 =
30. 30.421 − 29 =
31. 31.243 − 16 =
32. 32.151 − 59 =
33. 33.102 − 99 =
34. 34.330 − 58 =
35. 35.255 − 18 =
36. 36.158 − 89 =
37. 37.535 − 76 =
38. 38.143 − 36 =
39. 39.442 − 46 =
40. 40.410 − 37 =

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