Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 945 · 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. 1.250 − 19 =
2. 2.374 − 67 =
3. 3.443 − 18 =
4. 4.316 − 46 =
5. 5.539 − 88 =
6. 6.489 − 19 =
7. 7.195 − 48 =
8. 8.182 − 18 =
9. 9.498 − 49 =
10. 10.342 − 19 =
11. 11.292 − 96 =
12. 12.523 − 18 =
13. 13.166 − 97 =
14. 14.474 − 79 =
15. 15.141 − 16 =
16. 16.547 − 18 =
17. 17.193 − 77 =
18. 18.406 − 37 =
19. 19.498 − 26 =
20. 20.200 − 56 =
21. 21.225 − 26 =
22. 22.340 − 77 =
23. 23.219 − 38 =
24. 24.388 − 89 =
25. 25.194 − 86 =
26. 26.112 − 48 =
27. 27.554 − 28 =
28. 28.335 − 66 =
29. 29.444 − 19 =
30. 30.417 − 29 =
31. 31.138 − 38 =
32. 32.246 − 96 =
33. 33.337 − 67 =
34. 34.203 − 97 =
35. 35.173 − 37 =
36. 36.202 − 86 =
37. 37.105 − 16 =
38. 38.115 − 17 =
39. 39.270 − 86 =
40. 40.114 − 27 =

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