Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 315 · 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. 1.220 − 19 =
2. 2.541 − 27 =
3. 3.418 − 69 =
4. 4.398 − 76 =
5. 5.428 − 28 =
6. 6.498 − 27 =
7. 7.174 − 99 =
8. 8.394 − 76 =
9. 9.186 − 89 =
10. 10.188 − 27 =
11. 11.185 − 46 =
12. 12.378 − 88 =
13. 13.164 − 88 =
14. 14.253 − 67 =
15. 15.579 − 67 =
16. 16.344 − 96 =
17. 17.386 − 18 =
18. 18.248 − 99 =
19. 19.591 − 57 =
20. 20.221 − 47 =
21. 21.537 − 76 =
22. 22.124 − 79 =
23. 23.474 − 17 =
24. 24.241 − 18 =
25. 25.343 − 26 =
26. 26.80 − 46 =
27. 27.589 − 19 =
28. 28.412 − 88 =
29. 29.394 − 26 =
30. 30.161 − 86 =
31. 31.192 − 48 =
32. 32.317 − 18 =
33. 33.455 − 46 =
34. 34.490 − 96 =
35. 35.458 − 86 =
36. 36.160 − 16 =
37. 37.102 − 77 =
38. 38.108 − 86 =
39. 39.360 − 76 =
40. 40.348 − 58 =

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