Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 206 · 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. 1.90 − 46 =
2. 2.390 − 68 =
3. 3.570 − 49 =
4. 4.333 − 99 =
5. 5.400 − 57 =
6. 6.296 − 29 =
7. 7.525 − 37 =
8. 8.196 − 59 =
9. 9.593 − 87 =
10. 10.89 − 76 =
11. 11.68 − 26 =
12. 12.88 − 87 =
13. 13.422 − 28 =
14. 14.349 − 86 =
15. 15.137 − 97 =
16. 16.575 − 76 =
17. 17.566 − 76 =
18. 18.85 − 49 =
19. 19.322 − 29 =
20. 20.534 − 46 =
21. 21.177 − 49 =
22. 22.97 − 67 =
23. 23.212 − 89 =
24. 24.332 − 58 =
25. 25.314 − 39 =
26. 26.437 − 56 =
27. 27.336 − 58 =
28. 28.86 − 16 =
29. 29.80 − 57 =
30. 30.567 − 69 =
31. 31.497 − 27 =
32. 32.132 − 96 =
33. 33.401 − 19 =
34. 34.115 − 86 =
35. 35.472 − 68 =
36. 36.465 − 26 =
37. 37.435 − 27 =
38. 38.208 − 17 =
39. 39.112 − 36 =
40. 40.157 − 96 =

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