Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 866 · 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. 1.208 − 17 =
2. 2.565 − 29 =
3. 3.416 − 87 =
4. 4.96 − 16 =
5. 5.248 − 76 =
6. 6.231 − 48 =
7. 7.102 − 16 =
8. 8.202 − 29 =
9. 9.546 − 78 =
10. 10.297 − 18 =
11. 11.108 − 86 =
12. 12.114 − 46 =
13. 13.377 − 87 =
14. 14.138 − 28 =
15. 15.155 − 97 =
16. 16.129 − 27 =
17. 17.182 − 39 =
18. 18.201 − 69 =
19. 19.58 − 37 =
20. 20.558 − 17 =
21. 21.350 − 48 =
22. 22.515 − 18 =
23. 23.375 − 47 =
24. 24.327 − 96 =
25. 25.193 − 38 =
26. 26.490 − 77 =
27. 27.285 − 89 =
28. 28.526 − 29 =
29. 29.237 − 78 =
30. 30.515 − 76 =
31. 31.101 − 67 =
32. 32.178 − 58 =
33. 33.419 − 88 =
34. 34.345 − 19 =
35. 35.560 − 66 =
36. 36.508 − 69 =
37. 37.352 − 98 =
38. 38.87 − 19 =
39. 39.104 − 16 =
40. 40.214 − 28 =

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