Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 468 · 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. 1.578 − 37 =
2. 2.453 − 16 =
3. 3.575 − 39 =
4. 4.286 − 87 =
5. 5.94 − 19 =
6. 6.395 − 37 =
7. 7.334 − 97 =
8. 8.211 − 88 =
9. 9.255 − 57 =
10. 10.470 − 19 =
11. 11.364 − 77 =
12. 12.197 − 56 =
13. 13.253 − 46 =
14. 14.439 − 39 =
15. 15.488 − 48 =
16. 16.374 − 28 =
17. 17.375 − 69 =
18. 18.124 − 59 =
19. 19.219 − 78 =
20. 20.118 − 47 =
21. 21.175 − 99 =
22. 22.130 − 79 =
23. 23.308 − 27 =
24. 24.147 − 48 =
25. 25.547 − 19 =
26. 26.257 − 96 =
27. 27.530 − 26 =
28. 28.88 − 38 =
29. 29.387 − 86 =
30. 30.174 − 78 =
31. 31.263 − 38 =
32. 32.290 − 16 =
33. 33.308 − 98 =
34. 34.415 − 87 =
35. 35.422 − 27 =
36. 36.146 − 18 =
37. 37.558 − 16 =
38. 38.383 − 67 =
39. 39.85 − 67 =
40. 40.541 − 99 =

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