Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 579 · 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. 1.0.57 × 6 — where does the decimal point go? (a) 3.42 (b) 0.0342 (c) 34.2 (d) 0.342
2. 2.8.2 × 18 — where does the decimal point go? (a) 1476 (b) 14.76 (c) 147.6 (d) 1.476
3. 3.0.68 × 6 — where does the decimal point go? (a) 4.08 (b) 0.408 (c) 0.0408 (d) 40.8
4. 4.0.52 × 0.8 — where does the decimal point go? (a) 0.0416 (b) 0.416 (c) 0.00416 (d) 4.16
5. 5.5.2 × 9 — where does the decimal point go? (a) 4.68 (b) 0.468 (c) 46.8 (d) 468
6. 6.1.9 × 8 — where does the decimal point go? (a) 152 (b) 0.152 (c) 1.52 (d) 15.2
7. 7.8.3 × 39 — where does the decimal point go? (a) 3237 (b) 32.37 (c) 323.7 (d) 3.237
8. 8.0.83 × 3.2 — where does the decimal point go? (a) 0.2656 (b) 0.02656 (c) 26.56 (d) 2.656
9. 9.0.87 × 2.7 — where does the decimal point go? (a) 0.2349 (b) 0.02349 (c) 2.349 (d) 23.49
10. 10.0.36 × 3 — where does the decimal point go? (a) 0.108 (b) 10.8 (c) 0.0108 (d) 1.08
11. 11.4.7 × 7 — where does the decimal point go? (a) 0.329 (b) 32.9 (c) 3.29 (d) 329
12. 12.6.8 × 4.4 — where does the decimal point go? (a) 0.2992 (b) 299.2 (c) 2.992 (d) 29.92
13. 13.0.86 × 9 — where does the decimal point go? (a) 0.774 (b) 7.74 (c) 0.0774 (d) 77.4
14. 14.2.7 × 0.2 — where does the decimal point go? (a) 0.0054 (b) 5.4 (c) 0.54 (d) 0.054
15. 15.0.78 × 47 — where does the decimal point go? (a) 366.6 (b) 3.666 (c) 0.3666 (d) 36.66
16. 16.2.2 × 6 — where does the decimal point go? (a) 0.132 (b) 1.32 (c) 13.2 (d) 132
17. 17.0.38 × 1.1 — where does the decimal point go? (a) 0.0418 (b) 4.18 (c) 0.00418 (d) 0.418
18. 18.3.9 × 11 — where does the decimal point go? (a) 42.9 (b) 4.29 (c) 0.429 (d) 429
19. 19.3.1 × 0.7 — where does the decimal point go? (a) 21.7 (b) 2.17 (c) 0.217 (d) 0.0217
20. 20.5.9 × 17 — where does the decimal point go? (a) 1003 (b) 100.3 (c) 10.03 (d) 1.003
21. 21.0.37 × 3.1 — where does the decimal point go? (a) 11.47 (b) 1.147 (c) 0.01147 (d) 0.1147
22. 22.0.77 × 3.5 — where does the decimal point go? (a) 0.2695 (b) 2.695 (c) 26.95 (d) 0.02695
23. 23.0.45 × 5 — where does the decimal point go? (a) 0.225 (b) 0.0225 (c) 22.5 (d) 2.25
24. 24.0.78 × 3.1 — where does the decimal point go? (a) 2.418 (b) 24.18 (c) 0.02418 (d) 0.2418
25. 25.0.26 × 4.8 — where does the decimal point go? (a) 1.248 (b) 12.48 (c) 0.1248 (d) 0.01248
26. 26.0.44 × 8 — where does the decimal point go? (a) 0.0352 (b) 35.2 (c) 3.52 (d) 0.352
27. 27.0.66 × 6 — where does the decimal point go? (a) 3.96 (b) 0.396 (c) 39.6 (d) 0.0396
28. 28.1.6 × 6 — where does the decimal point go? (a) 0.096 (b) 96 (c) 0.96 (d) 9.6
29. 29.0.59 × 3.1 — where does the decimal point go? (a) 0.01829 (b) 18.29 (c) 0.1829 (d) 1.829
30. 30.0.19 × 2.8 — where does the decimal point go? (a) 0.532 (b) 0.0532 (c) 0.00532 (d) 5.32
31. 31.0.86 × 44 — where does the decimal point go? (a) 0.3784 (b) 3.784 (c) 378.4 (d) 37.84
32. 32.9.3 × 25 — where does the decimal point go? (a) 23.25 (b) 2325 (c) 2.325 (d) 232.5
33. 33.8.6 × 6 — where does the decimal point go? (a) 0.516 (b) 5.16 (c) 516 (d) 51.6
34. 34.0.86 × 8 — where does the decimal point go? (a) 0.688 (b) 6.88 (c) 0.0688 (d) 68.8
35. 35.9.8 × 0.2 — where does the decimal point go? (a) 0.196 (b) 1.96 (c) 19.6 (d) 0.0196
36. 36.3.1 × 8 — where does the decimal point go? (a) 248 (b) 0.248 (c) 24.8 (d) 2.48
37. 37.3.4 × 0.4 — where does the decimal point go? (a) 1.36 (b) 0.0136 (c) 0.136 (d) 13.6
38. 38.0.29 × 4 — where does the decimal point go? (a) 1.16 (b) 0.116 (c) 11.6 (d) 0.0116
39. 39.0.63 × 19 — where does the decimal point go? (a) 1.197 (b) 0.1197 (c) 11.97 (d) 119.7
40. 40.4.7 × 0.6 — where does the decimal point go? (a) 2.82 (b) 0.282 (c) 0.0282 (d) 28.2

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