Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 541 · 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. 1.131 − 48 =
2. 2.161 − 27 =
3. 3.532 − 78 =
4. 4.220 − 36 =
5. 5.171 − 47 =
6. 6.270 − 49 =
7. 7.127 − 36 =
8. 8.98 − 36 =
9. 9.534 − 69 =
10. 10.539 − 59 =
11. 11.298 − 46 =
12. 12.579 − 79 =
13. 13.452 − 99 =
14. 14.495 − 16 =
15. 15.154 − 79 =
16. 16.124 − 69 =
17. 17.436 − 56 =
18. 18.290 − 38 =
19. 19.103 − 39 =
20. 20.56 − 48 =
21. 21.199 − 48 =
22. 22.507 − 16 =
23. 23.196 − 19 =
24. 24.169 − 39 =
25. 25.185 − 79 =
26. 26.124 − 66 =
27. 27.412 − 89 =
28. 28.500 − 97 =
29. 29.430 − 38 =
30. 30.162 − 76 =
31. 31.227 − 28 =
32. 32.148 − 38 =
33. 33.396 − 59 =
34. 34.370 − 38 =
35. 35.553 − 16 =
36. 36.270 − 68 =
37. 37.441 − 19 =
38. 38.161 − 76 =
39. 39.574 − 79 =
40. 40.444 − 56 =

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