Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 317 · 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. 1.375 − 69 =
2. 2.553 − 89 =
3. 3.434 − 26 =
4. 4.137 − 77 =
5. 5.351 − 89 =
6. 6.158 − 77 =
7. 7.476 − 58 =
8. 8.418 − 69 =
9. 9.188 − 37 =
10. 10.156 − 96 =
11. 11.104 − 27 =
12. 12.381 − 66 =
13. 13.373 − 19 =
14. 14.216 − 38 =
15. 15.562 − 57 =
16. 16.89 − 36 =
17. 17.460 − 37 =
18. 18.532 − 19 =
19. 19.303 − 89 =
20. 20.278 − 46 =
21. 21.87 − 76 =
22. 22.189 − 98 =
23. 23.86 − 16 =
24. 24.337 − 88 =
25. 25.583 − 18 =
26. 26.99 − 37 =
27. 27.167 − 96 =
28. 28.167 − 19 =
29. 29.510 − 79 =
30. 30.550 − 48 =
31. 31.592 − 29 =
32. 32.346 − 18 =
33. 33.225 − 89 =
34. 34.384 − 18 =
35. 35.116 − 96 =
36. 36.285 − 96 =
37. 37.156 − 68 =
38. 38.144 − 28 =
39. 39.321 − 66 =
40. 40.171 − 28 =

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