Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 565 · 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. 1.323 − 59 =
2. 2.86 − 36 =
3. 3.512 − 96 =
4. 4.467 − 67 =
5. 5.140 − 88 =
6. 6.354 − 86 =
7. 7.338 − 89 =
8. 8.265 − 86 =
9. 9.285 − 58 =
10. 10.255 − 18 =
11. 11.516 − 37 =
12. 12.102 − 27 =
13. 13.164 − 17 =
14. 14.574 − 29 =
15. 15.154 − 68 =
16. 16.142 − 18 =
17. 17.385 − 76 =
18. 18.467 − 19 =
19. 19.354 − 17 =
20. 20.118 − 98 =
21. 21.315 − 17 =
22. 22.178 − 29 =
23. 23.168 − 47 =
24. 24.241 − 37 =
25. 25.149 − 77 =
26. 26.235 − 88 =
27. 27.580 − 96 =
28. 28.426 − 69 =
29. 29.577 − 68 =
30. 30.514 − 46 =
31. 31.564 − 57 =
32. 32.413 − 98 =
33. 33.145 − 39 =
34. 34.196 − 56 =
35. 35.352 − 76 =
36. 36.111 − 99 =
37. 37.550 − 39 =
38. 38.88 − 16 =
39. 39.301 − 29 =
40. 40.181 − 89 =

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