Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 913 · 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. 1.316 − 18 =
2. 2.191 − 98 =
3. 3.306 − 26 =
4. 4.417 − 96 =
5. 5.154 − 88 =
6. 6.539 − 48 =
7. 7.400 − 89 =
8. 8.169 − 79 =
9. 9.85 − 58 =
10. 10.76 − 29 =
11. 11.437 − 68 =
12. 12.380 − 88 =
13. 13.430 − 59 =
14. 14.595 − 89 =
15. 15.198 − 47 =
16. 16.63 − 57 =
17. 17.332 − 26 =
18. 18.493 − 68 =
19. 19.348 − 79 =
20. 20.206 − 36 =
21. 21.120 − 78 =
22. 22.570 − 77 =
23. 23.463 − 29 =
24. 24.475 − 17 =
25. 25.571 − 69 =
26. 26.106 − 98 =
27. 27.118 − 27 =
28. 28.120 − 47 =
29. 29.521 − 79 =
30. 30.296 − 56 =
31. 31.570 − 66 =
32. 32.558 − 19 =
33. 33.254 − 66 =
34. 34.368 − 87 =
35. 35.252 − 98 =
36. 36.296 − 99 =
37. 37.430 − 58 =
38. 38.551 − 26 =
39. 39.313 − 97 =
40. 40.484 − 48 =

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