Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 153 · 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. 1.570 − 89 =
2. 2.54 − 28 =
3. 3.355 − 97 =
4. 4.265 − 76 =
5. 5.148 − 47 =
6. 6.141 − 76 =
7. 7.333 − 28 =
8. 8.112 − 37 =
9. 9.391 − 78 =
10. 10.312 − 28 =
11. 11.531 − 46 =
12. 12.424 − 17 =
13. 13.137 − 18 =
14. 14.551 − 56 =
15. 15.334 − 89 =
16. 16.201 − 18 =
17. 17.292 − 18 =
18. 18.103 − 69 =
19. 19.178 − 16 =
20. 20.109 − 59 =
21. 21.159 − 39 =
22. 22.438 − 88 =
23. 23.287 − 79 =
24. 24.471 − 47 =
25. 25.582 − 86 =
26. 26.504 − 39 =
27. 27.342 − 46 =
28. 28.508 − 88 =
29. 29.532 − 66 =
30. 30.87 − 36 =
31. 31.230 − 78 =
32. 32.537 − 69 =
33. 33.415 − 76 =
34. 34.247 − 48 =
35. 35.88 − 67 =
36. 36.164 − 36 =
37. 37.595 − 68 =
38. 38.173 − 19 =
39. 39.414 − 47 =
40. 40.431 − 16 =

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