Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 73 · 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. 1.497 − 59 =
2. 2.128 − 16 =
3. 3.488 − 99 =
4. 4.94 − 76 =
5. 5.463 − 49 =
6. 6.300 − 48 =
7. 7.390 − 68 =
8. 8.139 − 99 =
9. 9.143 − 67 =
10. 10.65 − 48 =
11. 11.260 − 27 =
12. 12.296 − 48 =
13. 13.111 − 36 =
14. 14.454 − 69 =
15. 15.446 − 89 =
16. 16.140 − 86 =
17. 17.563 − 76 =
18. 18.166 − 76 =
19. 19.175 − 18 =
20. 20.77 − 17 =
21. 21.261 − 76 =
22. 22.472 − 68 =
23. 23.109 − 96 =
24. 24.78 − 27 =
25. 25.291 − 59 =
26. 26.318 − 27 =
27. 27.511 − 69 =
28. 28.206 − 76 =
29. 29.293 − 98 =
30. 30.593 − 58 =
31. 31.249 − 76 =
32. 32.386 − 38 =
33. 33.145 − 57 =
34. 34.170 − 99 =
35. 35.208 − 86 =
36. 36.214 − 76 =
37. 37.451 − 49 =
38. 38.323 − 16 =
39. 39.85 − 69 =
40. 40.464 − 29 =

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