Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 827 · 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. 1.138 − 39 =
2. 2.433 − 46 =
3. 3.518 − 16 =
4. 4.127 − 99 =
5. 5.54 − 26 =
6. 6.358 − 46 =
7. 7.428 − 66 =
8. 8.474 − 46 =
9. 9.489 − 58 =
10. 10.143 − 36 =
11. 11.589 − 47 =
12. 12.108 − 39 =
13. 13.376 − 76 =
14. 14.127 − 48 =
15. 15.172 − 98 =
16. 16.454 − 47 =
17. 17.538 − 48 =
18. 18.166 − 76 =
19. 19.197 − 89 =
20. 20.466 − 59 =
21. 21.172 − 18 =
22. 22.331 − 56 =
23. 23.223 − 79 =
24. 24.411 − 27 =
25. 25.481 − 96 =
26. 26.497 − 57 =
27. 27.565 − 47 =
28. 28.85 − 48 =
29. 29.537 − 69 =
30. 30.281 − 17 =
31. 31.592 − 26 =
32. 32.547 − 36 =
33. 33.465 − 87 =
34. 34.414 − 27 =
35. 35.345 − 66 =
36. 36.203 − 87 =
37. 37.511 − 88 =
38. 38.575 − 78 =
39. 39.556 − 77 =
40. 40.137 − 27 =

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