Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 949 · 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. 1.463 − 16 =
2. 2.437 − 86 =
3. 3.301 − 99 =
4. 4.591 − 96 =
5. 5.540 − 29 =
6. 6.144 − 18 =
7. 7.470 − 97 =
8. 8.142 − 77 =
9. 9.515 − 79 =
10. 10.340 − 46 =
11. 11.334 − 37 =
12. 12.120 − 17 =
13. 13.510 − 46 =
14. 14.212 − 58 =
15. 15.373 − 59 =
16. 16.335 − 78 =
17. 17.221 − 49 =
18. 18.223 − 57 =
19. 19.359 − 96 =
20. 20.570 − 18 =
21. 21.149 − 59 =
22. 22.510 − 37 =
23. 23.374 − 87 =
24. 24.291 − 96 =
25. 25.223 − 28 =
26. 26.190 − 17 =
27. 27.261 − 26 =
28. 28.216 − 98 =
29. 29.127 − 79 =
30. 30.493 − 26 =
31. 31.68 − 27 =
32. 32.390 − 46 =
33. 33.438 − 29 =
34. 34.529 − 78 =
35. 35.297 − 97 =
36. 36.78 − 37 =
37. 37.361 − 67 =
38. 38.281 − 87 =
39. 39.271 − 17 =
40. 40.521 − 68 =

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