Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 347 · 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. 1.177 − 89 =
2. 2.104 − 28 =
3. 3.267 − 67 =
4. 4.399 − 46 =
5. 5.189 − 77 =
6. 6.533 − 99 =
7. 7.458 − 68 =
8. 8.205 − 69 =
9. 9.498 − 99 =
10. 10.383 − 96 =
11. 11.286 − 76 =
12. 12.307 − 38 =
13. 13.253 − 26 =
14. 14.288 − 56 =
15. 15.414 − 28 =
16. 16.147 − 68 =
17. 17.123 − 87 =
18. 18.384 − 78 =
19. 19.61 − 27 =
20. 20.393 − 76 =
21. 21.106 − 29 =
22. 22.239 − 68 =
23. 23.280 − 39 =
24. 24.350 − 37 =
25. 25.368 − 47 =
26. 26.495 − 27 =
27. 27.127 − 59 =
28. 28.556 − 96 =
29. 29.587 − 18 =
30. 30.569 − 79 =
31. 31.441 − 47 =
32. 32.136 − 98 =
33. 33.457 − 38 =
34. 34.172 − 29 =
35. 35.158 − 17 =
36. 36.192 − 78 =
37. 37.594 − 49 =
38. 38.95 − 38 =
39. 39.276 − 48 =
40. 40.75 − 28 =

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