Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 333 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.0.28 × 7 — where does the decimal point go? (a) 0.0196 (b) 1.96 (c) 0.196 (d) 19.6
2. 2.7.5 × 0.7 — where does the decimal point go? (a) 5.25 (b) 0.0525 (c) 0.525 (d) 52.5
3. 3.9.3 × 26 — where does the decimal point go? (a) 2418 (b) 24.18 (c) 241.8 (d) 2.418
4. 4.5.8 × 0.9 — where does the decimal point go? (a) 0.0522 (b) 52.2 (c) 0.522 (d) 5.22
5. 5.3.6 × 4 — where does the decimal point go? (a) 0.144 (b) 1.44 (c) 144 (d) 14.4
6. 6.1.4 × 3 — where does the decimal point go? (a) 4.2 (b) 42 (c) 0.042 (d) 0.42
7. 7.9.6 × 29 — where does the decimal point go? (a) 2.784 (b) 278.4 (c) 2784 (d) 27.84
8. 8.0.89 × 39 — where does the decimal point go? (a) 0.3471 (b) 34.71 (c) 347.1 (d) 3.471
9. 9.0.27 × 49 — where does the decimal point go? (a) 13.23 (b) 0.1323 (c) 132.3 (d) 1.323
10. 10.7.1 × 3.2 — where does the decimal point go? (a) 227.2 (b) 0.2272 (c) 22.72 (d) 2.272
11. 11.0.78 × 26 — where does the decimal point go? (a) 0.2028 (b) 202.8 (c) 2.028 (d) 20.28
12. 12.6.7 × 14 — where does the decimal point go? (a) 0.938 (b) 9.38 (c) 938 (d) 93.8
13. 13.0.27 × 2.5 — where does the decimal point go? (a) 0.00675 (b) 6.75 (c) 0.0675 (d) 0.675
14. 14.0.37 × 35 — where does the decimal point go? (a) 12.95 (b) 129.5 (c) 1.295 (d) 0.1295
15. 15.5.2 × 0.2 — where does the decimal point go? (a) 1.04 (b) 0.0104 (c) 0.104 (d) 10.4
16. 16.0.94 × 0.2 — where does the decimal point go? (a) 0.00188 (b) 0.0188 (c) 0.188 (d) 1.88
17. 17.0.89 × 0.4 — where does the decimal point go? (a) 3.56 (b) 0.356 (c) 0.00356 (d) 0.0356
18. 18.5.4 × 9 — where does the decimal point go? (a) 4.86 (b) 48.6 (c) 0.486 (d) 486
19. 19.0.19 × 4.1 — where does the decimal point go? (a) 0.00779 (b) 7.79 (c) 0.0779 (d) 0.779
20. 20.1.4 × 0.4 — where does the decimal point go? (a) 0.0056 (b) 0.056 (c) 0.56 (d) 5.6
21. 21.2.6 × 0.7 — where does the decimal point go? (a) 18.2 (b) 0.0182 (c) 1.82 (d) 0.182
22. 22.8.7 × 3 — where does the decimal point go? (a) 0.261 (b) 26.1 (c) 2.61 (d) 261
23. 23.6.8 × 8 — where does the decimal point go? (a) 544 (b) 54.4 (c) 5.44 (d) 0.544
24. 24.0.36 × 0.3 — where does the decimal point go? (a) 0.00108 (b) 0.0108 (c) 0.108 (d) 1.08
25. 25.9.7 × 31 — where does the decimal point go? (a) 3.007 (b) 30.07 (c) 3007 (d) 300.7
26. 26.0.72 × 2.9 — where does the decimal point go? (a) 0.2088 (b) 20.88 (c) 0.02088 (d) 2.088
27. 27.0.91 × 0.7 — where does the decimal point go? (a) 0.637 (b) 0.0637 (c) 0.00637 (d) 6.37
28. 28.4.1 × 1.3 — where does the decimal point go? (a) 5.33 (b) 0.533 (c) 0.0533 (d) 53.3
29. 29.9.6 × 38 — where does the decimal point go? (a) 364.8 (b) 3648 (c) 36.48 (d) 3.648
30. 30.0.23 × 0.7 — where does the decimal point go? (a) 0.00161 (b) 0.161 (c) 0.0161 (d) 1.61
31. 31.2.4 × 31 — where does the decimal point go? (a) 744 (b) 74.4 (c) 0.744 (d) 7.44
32. 32.4.8 × 7 — where does the decimal point go? (a) 3.36 (b) 336 (c) 33.6 (d) 0.336
33. 33.0.42 × 0.7 — where does the decimal point go? (a) 2.94 (b) 0.0294 (c) 0.294 (d) 0.00294
34. 34.0.64 × 27 — where does the decimal point go? (a) 17.28 (b) 1.728 (c) 0.1728 (d) 172.8
35. 35.0.98 × 3.9 — where does the decimal point go? (a) 3.822 (b) 0.3822 (c) 0.03822 (d) 38.22
36. 36.0.77 × 1.2 — where does the decimal point go? (a) 0.924 (b) 0.00924 (c) 9.24 (d) 0.0924
37. 37.0.32 × 41 — where does the decimal point go? (a) 1.312 (b) 0.1312 (c) 131.2 (d) 13.12
38. 38.2.9 × 0.6 — where does the decimal point go? (a) 0.0174 (b) 0.174 (c) 17.4 (d) 1.74
39. 39.0.59 × 4 — where does the decimal point go? (a) 0.0236 (b) 0.236 (c) 23.6 (d) 2.36
40. 40.8.8 × 28 — where does the decimal point go? (a) 246.4 (b) 2.464 (c) 2464 (d) 24.64

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