Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 575 · 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. 1.136 − 49 =
2. 2.228 − 18 =
3. 3.380 − 26 =
4. 4.429 − 97 =
5. 5.161 − 38 =
6. 6.369 − 69 =
7. 7.455 − 76 =
8. 8.210 − 19 =
9. 9.110 − 17 =
10. 10.165 − 59 =
11. 11.111 − 47 =
12. 12.247 − 49 =
13. 13.79 − 58 =
14. 14.386 − 29 =
15. 15.430 − 79 =
16. 16.142 − 38 =
17. 17.511 − 17 =
18. 18.208 − 19 =
19. 19.482 − 88 =
20. 20.268 − 47 =
21. 21.563 − 57 =
22. 22.117 − 76 =
23. 23.148 − 47 =
24. 24.321 − 26 =
25. 25.173 − 89 =
26. 26.316 − 87 =
27. 27.194 − 76 =
28. 28.262 − 16 =
29. 29.197 − 76 =
30. 30.360 − 47 =
31. 31.179 − 96 =
32. 32.429 − 27 =
33. 33.544 − 26 =
34. 34.344 − 17 =
35. 35.150 − 76 =
36. 36.446 − 58 =
37. 37.582 − 57 =
38. 38.445 − 48 =
39. 39.86 − 47 =
40. 40.90 − 47 =

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