Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 943 · 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. 1.394 − 38 =
2. 2.310 − 36 =
3. 3.294 − 58 =
4. 4.183 − 99 =
5. 5.474 − 37 =
6. 6.347 − 87 =
7. 7.228 − 59 =
8. 8.358 − 18 =
9. 9.388 − 48 =
10. 10.70 − 17 =
11. 11.420 − 59 =
12. 12.446 − 56 =
13. 13.114 − 69 =
14. 14.169 − 59 =
15. 15.463 − 88 =
16. 16.286 − 57 =
17. 17.592 − 67 =
18. 18.111 − 86 =
19. 19.384 − 89 =
20. 20.344 − 27 =
21. 21.95 − 28 =
22. 22.286 − 99 =
23. 23.555 − 18 =
24. 24.182 − 77 =
25. 25.455 − 79 =
26. 26.296 − 26 =
27. 27.392 − 29 =
28. 28.514 − 79 =
29. 29.491 − 86 =
30. 30.112 − 56 =
31. 31.117 − 89 =
32. 32.205 − 58 =
33. 33.582 − 17 =
34. 34.275 − 88 =
35. 35.511 − 57 =
36. 36.218 − 86 =
37. 37.499 − 87 =
38. 38.304 − 68 =
39. 39.515 − 76 =
40. 40.555 − 97 =

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