Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 412 · 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. 1.0.74 × 3.8 — where does the decimal point go? (a) 0.02812 (b) 0.2812 (c) 2.812 (d) 28.12
2. 2.6.2 × 2.8 — where does the decimal point go? (a) 0.1736 (b) 17.36 (c) 173.6 (d) 1.736
3. 3.5.9 × 47 — where does the decimal point go? (a) 27.73 (b) 277.3 (c) 2773 (d) 2.773
4. 4.1.4 × 11 — where does the decimal point go? (a) 15.4 (b) 0.154 (c) 1.54 (d) 154
5. 5.4.5 × 7 — where does the decimal point go? (a) 31.5 (b) 0.315 (c) 315 (d) 3.15
6. 6.6.2 × 7 — where does the decimal point go? (a) 43.4 (b) 4.34 (c) 0.434 (d) 434
7. 7.0.32 × 4 — where does the decimal point go? (a) 0.128 (b) 1.28 (c) 0.0128 (d) 12.8
8. 8.0.97 × 0.3 — where does the decimal point go? (a) 0.0291 (b) 0.291 (c) 0.00291 (d) 2.91
9. 9.0.93 × 0.4 — where does the decimal point go? (a) 0.372 (b) 3.72 (c) 0.0372 (d) 0.00372
10. 10.0.22 × 0.3 — where does the decimal point go? (a) 0.00066 (b) 0.0066 (c) 0.66 (d) 0.066
11. 11.0.47 × 18 — where does the decimal point go? (a) 84.6 (b) 0.846 (c) 8.46 (d) 0.0846
12. 12.0.38 × 6 — where does the decimal point go? (a) 22.8 (b) 0.0228 (c) 0.228 (d) 2.28
13. 13.3.1 × 3 — where does the decimal point go? (a) 9.3 (b) 93 (c) 0.093 (d) 0.93
14. 14.9.7 × 1.2 — where does the decimal point go? (a) 0.1164 (b) 1.164 (c) 116.4 (d) 11.64
15. 15.0.33 × 29 — where does the decimal point go? (a) 95.7 (b) 0.957 (c) 9.57 (d) 0.0957
16. 16.4.8 × 4.1 — where does the decimal point go? (a) 19.68 (b) 1.968 (c) 196.8 (d) 0.1968
17. 17.6.7 × 0.9 — where does the decimal point go? (a) 6.03 (b) 0.603 (c) 0.0603 (d) 60.3
18. 18.9.2 × 22 — where does the decimal point go? (a) 2.024 (b) 20.24 (c) 2024 (d) 202.4
19. 19.0.16 × 4.1 — where does the decimal point go? (a) 0.656 (b) 0.0656 (c) 6.56 (d) 0.00656
20. 20.0.55 × 0.9 — where does the decimal point go? (a) 0.0495 (b) 4.95 (c) 0.495 (d) 0.00495
21. 21.6.9 × 3.6 — where does the decimal point go? (a) 2.484 (b) 24.84 (c) 0.2484 (d) 248.4
22. 22.0.38 × 1.3 — where does the decimal point go? (a) 4.94 (b) 0.00494 (c) 0.494 (d) 0.0494
23. 23.0.89 × 0.5 — where does the decimal point go? (a) 0.0445 (b) 0.00445 (c) 4.45 (d) 0.445
24. 24.2.8 × 2 — where does the decimal point go? (a) 0.056 (b) 5.6 (c) 0.56 (d) 56
25. 25.2.1 × 44 — where does the decimal point go? (a) 924 (b) 0.924 (c) 92.4 (d) 9.24
26. 26.3.7 × 4.6 — where does the decimal point go? (a) 170.2 (b) 17.02 (c) 0.1702 (d) 1.702
27. 27.2.4 × 18 — where does the decimal point go? (a) 4.32 (b) 0.432 (c) 432 (d) 43.2
28. 28.0.93 × 4.7 — where does the decimal point go? (a) 0.04371 (b) 4.371 (c) 0.4371 (d) 43.71
29. 29.7.8 × 6 — where does the decimal point go? (a) 4.68 (b) 468 (c) 0.468 (d) 46.8
30. 30.2.7 × 0.9 — where does the decimal point go? (a) 2.43 (b) 0.243 (c) 0.0243 (d) 24.3
31. 31.0.46 × 0.8 — where does the decimal point go? (a) 0.368 (b) 0.0368 (c) 3.68 (d) 0.00368
32. 32.5.8 × 3.6 — where does the decimal point go? (a) 208.8 (b) 0.2088 (c) 20.88 (d) 2.088
33. 33.4.2 × 31 — where does the decimal point go? (a) 130.2 (b) 13.02 (c) 1302 (d) 1.302
34. 34.0.74 × 2 — where does the decimal point go? (a) 0.0148 (b) 14.8 (c) 1.48 (d) 0.148
35. 35.0.32 × 3 — where does the decimal point go? (a) 0.0096 (b) 9.6 (c) 0.096 (d) 0.96
36. 36.8.1 × 1.7 — where does the decimal point go? (a) 13.77 (b) 137.7 (c) 0.1377 (d) 1.377
37. 37.6.5 × 15 — where does the decimal point go? (a) 97.5 (b) 9.75 (c) 975 (d) 0.975
38. 38.0.57 × 0.8 — where does the decimal point go? (a) 0.00456 (b) 0.456 (c) 0.0456 (d) 4.56
39. 39.0.31 × 0.6 — where does the decimal point go? (a) 0.0186 (b) 0.00186 (c) 1.86 (d) 0.186
40. 40.0.82 × 0.9 — where does the decimal point go? (a) 7.38 (b) 0.0738 (c) 0.00738 (d) 0.738

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