Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 836 · 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. 1.544 − 49 =
2. 2.499 − 57 =
3. 3.326 − 67 =
4. 4.277 − 58 =
5. 5.161 − 29 =
6. 6.184 − 67 =
7. 7.428 − 66 =
8. 8.184 − 19 =
9. 9.585 − 16 =
10. 10.209 − 26 =
11. 11.406 − 37 =
12. 12.60 − 19 =
13. 13.230 − 36 =
14. 14.574 − 56 =
15. 15.188 − 38 =
16. 16.383 − 69 =
17. 17.80 − 36 =
18. 18.237 − 17 =
19. 19.262 − 96 =
20. 20.118 − 89 =
21. 21.286 − 79 =
22. 22.253 − 98 =
23. 23.144 − 67 =
24. 24.590 − 97 =
25. 25.191 − 39 =
26. 26.321 − 78 =
27. 27.135 − 19 =
28. 28.517 − 19 =
29. 29.165 − 39 =
30. 30.200 − 57 =
31. 31.56 − 36 =
32. 32.453 − 76 =
33. 33.498 − 88 =
34. 34.157 − 67 =
35. 35.340 − 67 =
36. 36.526 − 48 =
37. 37.426 − 86 =
38. 38.556 − 48 =
39. 39.454 − 26 =
40. 40.390 − 49 =

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