Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 88 · 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. 1.144 − 59 =
2. 2.538 − 19 =
3. 3.556 − 98 =
4. 4.148 − 78 =
5. 5.454 − 67 =
6. 6.574 − 87 =
7. 7.595 − 39 =
8. 8.469 − 37 =
9. 9.490 − 57 =
10. 10.177 − 87 =
11. 11.281 − 46 =
12. 12.503 − 26 =
13. 13.278 − 37 =
14. 14.375 − 36 =
15. 15.523 − 46 =
16. 16.305 − 57 =
17. 17.385 − 58 =
18. 18.79 − 39 =
19. 19.582 − 36 =
20. 20.299 − 36 =
21. 21.574 − 28 =
22. 22.144 − 18 =
23. 23.207 − 79 =
24. 24.90 − 18 =
25. 25.96 − 89 =
26. 26.499 − 29 =
27. 27.236 − 19 =
28. 28.75 − 19 =
29. 29.401 − 26 =
30. 30.185 − 47 =
31. 31.125 − 18 =
32. 32.434 − 58 =
33. 33.65 − 57 =
34. 34.372 − 38 =
35. 35.112 − 66 =
36. 36.371 − 56 =
37. 37.245 − 38 =
38. 38.65 − 26 =
39. 39.211 − 27 =
40. 40.326 − 87 =

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