Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 941 · 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. 1.517 − 87 =
2. 2.110 − 67 =
3. 3.236 − 56 =
4. 4.449 − 49 =
5. 5.205 − 76 =
6. 6.91 − 38 =
7. 7.143 − 58 =
8. 8.444 − 98 =
9. 9.363 − 67 =
10. 10.506 − 38 =
11. 11.459 − 26 =
12. 12.243 − 27 =
13. 13.170 − 78 =
14. 14.394 − 29 =
15. 15.427 − 88 =
16. 16.126 − 66 =
17. 17.534 − 68 =
18. 18.391 − 57 =
19. 19.505 − 26 =
20. 20.192 − 86 =
21. 21.78 − 48 =
22. 22.245 − 37 =
23. 23.534 − 78 =
24. 24.532 − 78 =
25. 25.253 − 28 =
26. 26.158 − 99 =
27. 27.411 − 89 =
28. 28.313 − 27 =
29. 29.350 − 56 =
30. 30.537 − 66 =
31. 31.358 − 86 =
32. 32.588 − 38 =
33. 33.570 − 87 =
34. 34.428 − 27 =
35. 35.101 − 36 =
36. 36.212 − 38 =
37. 37.433 − 29 =
38. 38.324 − 27 =
39. 39.508 − 48 =
40. 40.315 − 77 =

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