Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 934 · 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. 1.261 − 38 =
2. 2.479 − 27 =
3. 3.168 − 68 =
4. 4.454 − 38 =
5. 5.425 − 29 =
6. 6.200 − 98 =
7. 7.241 − 19 =
8. 8.403 − 19 =
9. 9.166 − 69 =
10. 10.176 − 77 =
11. 11.580 − 78 =
12. 12.104 − 29 =
13. 13.233 − 59 =
14. 14.377 − 48 =
15. 15.318 − 57 =
16. 16.402 − 27 =
17. 17.571 − 29 =
18. 18.421 − 79 =
19. 19.166 − 87 =
20. 20.162 − 97 =
21. 21.580 − 76 =
22. 22.288 − 97 =
23. 23.126 − 47 =
24. 24.146 − 96 =
25. 25.206 − 76 =
26. 26.506 − 78 =
27. 27.299 − 57 =
28. 28.323 − 66 =
29. 29.182 − 97 =
30. 30.384 − 48 =
31. 31.174 − 29 =
32. 32.496 − 17 =
33. 33.434 − 26 =
34. 34.225 − 68 =
35. 35.585 − 69 =
36. 36.161 − 97 =
37. 37.94 − 28 =
38. 38.574 − 19 =
39. 39.423 − 86 =
40. 40.62 − 57 =

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