Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 379 · 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. 1.118 − 46 =
2. 2.422 − 89 =
3. 3.224 − 66 =
4. 4.563 − 98 =
5. 5.187 − 48 =
6. 6.550 − 17 =
7. 7.364 − 86 =
8. 8.286 − 46 =
9. 9.338 − 36 =
10. 10.587 − 87 =
11. 11.544 − 26 =
12. 12.98 − 18 =
13. 13.371 − 38 =
14. 14.236 − 38 =
15. 15.371 − 77 =
16. 16.372 − 88 =
17. 17.596 − 17 =
18. 18.529 − 17 =
19. 19.503 − 79 =
20. 20.486 − 28 =
21. 21.362 − 17 =
22. 22.77 − 47 =
23. 23.175 − 36 =
24. 24.65 − 18 =
25. 25.488 − 96 =
26. 26.497 − 27 =
27. 27.530 − 99 =
28. 28.399 − 96 =
29. 29.562 − 68 =
30. 30.298 − 66 =
31. 31.176 − 19 =
32. 32.370 − 17 =
33. 33.355 − 29 =
34. 34.134 − 29 =
35. 35.376 − 49 =
36. 36.263 − 46 =
37. 37.162 − 19 =
38. 38.122 − 87 =
39. 39.184 − 36 =
40. 40.233 − 19 =

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