Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 381 · 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. 1.515 − 58 =
2. 2.294 − 37 =
3. 3.306 − 58 =
4. 4.430 − 49 =
5. 5.460 − 69 =
6. 6.201 − 99 =
7. 7.277 − 16 =
8. 8.311 − 27 =
9. 9.324 − 38 =
10. 10.115 − 39 =
11. 11.424 − 69 =
12. 12.102 − 18 =
13. 13.322 − 98 =
14. 14.426 − 19 =
15. 15.63 − 37 =
16. 16.510 − 89 =
17. 17.133 − 98 =
18. 18.544 − 77 =
19. 19.561 − 37 =
20. 20.423 − 36 =
21. 21.144 − 18 =
22. 22.482 − 66 =
23. 23.73 − 48 =
24. 24.559 − 39 =
25. 25.476 − 18 =
26. 26.195 − 98 =
27. 27.303 − 79 =
28. 28.353 − 27 =
29. 29.463 − 96 =
30. 30.53 − 39 =
31. 31.401 − 77 =
32. 32.542 − 59 =
33. 33.284 − 29 =
34. 34.143 − 49 =
35. 35.175 − 67 =
36. 36.141 − 17 =
37. 37.190 − 66 =
38. 38.570 − 36 =
39. 39.208 − 48 =
40. 40.351 − 86 =

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