Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 85 · 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. 1.289 − 97 =
2. 2.493 − 79 =
3. 3.141 − 48 =
4. 4.329 − 26 =
5. 5.94 − 18 =
6. 6.327 − 46 =
7. 7.306 − 47 =
8. 8.118 − 17 =
9. 9.450 − 16 =
10. 10.296 − 56 =
11. 11.112 − 39 =
12. 12.450 − 17 =
13. 13.128 − 98 =
14. 14.282 − 46 =
15. 15.458 − 49 =
16. 16.189 − 88 =
17. 17.108 − 36 =
18. 18.411 − 27 =
19. 19.87 − 29 =
20. 20.308 − 19 =
21. 21.310 − 28 =
22. 22.398 − 79 =
23. 23.221 − 96 =
24. 24.525 − 46 =
25. 25.497 − 59 =
26. 26.154 − 59 =
27. 27.244 − 97 =
28. 28.327 − 69 =
29. 29.406 − 37 =
30. 30.175 − 67 =
31. 31.94 − 68 =
32. 32.500 − 67 =
33. 33.358 − 17 =
34. 34.136 − 76 =
35. 35.180 − 36 =
36. 36.503 − 78 =
37. 37.245 − 56 =
38. 38.432 − 16 =
39. 39.243 − 76 =
40. 40.133 − 37 =

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