Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 610 · 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. 1.0.66 × 4.9 — where does the decimal point go? (a) 3.234 (b) 32.34 (c) 0.03234 (d) 0.3234
2. 2.9.5 × 31 — where does the decimal point go? (a) 29.45 (b) 2.945 (c) 2945 (d) 294.5
3. 3.1.2 × 1.8 — where does the decimal point go? (a) 21.6 (b) 0.216 (c) 0.0216 (d) 2.16
4. 4.3.9 × 0.2 — where does the decimal point go? (a) 0.078 (b) 0.78 (c) 7.8 (d) 0.0078
5. 5.0.96 × 3 — where does the decimal point go? (a) 0.288 (b) 2.88 (c) 0.0288 (d) 28.8
6. 6.7.8 × 0.8 — where does the decimal point go? (a) 6.24 (b) 0.624 (c) 0.0624 (d) 62.4
7. 7.6.6 × 6 — where does the decimal point go? (a) 396 (b) 0.396 (c) 39.6 (d) 3.96
8. 8.9.7 × 36 — where does the decimal point go? (a) 3.492 (b) 34.92 (c) 3492 (d) 349.2
9. 9.1.6 × 46 — where does the decimal point go? (a) 73.6 (b) 7.36 (c) 736 (d) 0.736
10. 10.1.9 × 0.3 — where does the decimal point go? (a) 0.057 (b) 0.0057 (c) 5.7 (d) 0.57
11. 11.3.9 × 48 — where does the decimal point go? (a) 187.2 (b) 1872 (c) 18.72 (d) 1.872
12. 12.0.31 × 2.2 — where does the decimal point go? (a) 0.682 (b) 0.0682 (c) 0.00682 (d) 6.82
13. 13.8.9 × 2 — where does the decimal point go? (a) 0.178 (b) 17.8 (c) 178 (d) 1.78
14. 14.4.8 × 2 — where does the decimal point go? (a) 96 (b) 0.096 (c) 0.96 (d) 9.6
15. 15.7.6 × 0.6 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 0.0456 (d) 45.6
16. 16.0.61 × 0.7 — where does the decimal point go? (a) 0.0427 (b) 0.00427 (c) 0.427 (d) 4.27
17. 17.5.6 × 1.7 — where does the decimal point go? (a) 0.0952 (b) 9.52 (c) 0.952 (d) 95.2
18. 18.0.85 × 17 — where does the decimal point go? (a) 14.45 (b) 1.445 (c) 0.1445 (d) 144.5
19. 19.0.28 × 32 — where does the decimal point go? (a) 8.96 (b) 0.0896 (c) 0.896 (d) 89.6
20. 20.5.4 × 9 — where does the decimal point go? (a) 486 (b) 48.6 (c) 0.486 (d) 4.86
21. 21.1.8 × 4.2 — where does the decimal point go? (a) 75.6 (b) 0.0756 (c) 0.756 (d) 7.56
22. 22.3.1 × 2.9 — where does the decimal point go? (a) 0.0899 (b) 89.9 (c) 8.99 (d) 0.899
23. 23.8.1 × 1.8 — where does the decimal point go? (a) 14.58 (b) 145.8 (c) 1.458 (d) 0.1458
24. 24.3.3 × 9 — where does the decimal point go? (a) 2.97 (b) 29.7 (c) 297 (d) 0.297
25. 25.3.2 × 2.6 — where does the decimal point go? (a) 0.0832 (b) 8.32 (c) 0.832 (d) 83.2
26. 26.8.4 × 34 — where does the decimal point go? (a) 2.856 (b) 2856 (c) 28.56 (d) 285.6
27. 27.0.28 × 0.6 — where does the decimal point go? (a) 1.68 (b) 0.00168 (c) 0.0168 (d) 0.168
28. 28.0.32 × 0.3 — where does the decimal point go? (a) 0.00096 (b) 0.0096 (c) 0.096 (d) 0.96
29. 29.0.89 × 2.2 — where does the decimal point go? (a) 1.958 (b) 0.01958 (c) 0.1958 (d) 19.58
30. 30.5.2 × 4.9 — where does the decimal point go? (a) 2.548 (b) 0.2548 (c) 254.8 (d) 25.48
31. 31.0.36 × 0.2 — where does the decimal point go? (a) 0.0072 (b) 0.72 (c) 0.00072 (d) 0.072
32. 32.4.5 × 0.5 — where does the decimal point go? (a) 0.0225 (b) 0.225 (c) 2.25 (d) 22.5
33. 33.9.6 × 3.9 — where does the decimal point go? (a) 374.4 (b) 3.744 (c) 0.3744 (d) 37.44
34. 34.2.5 × 7 — where does the decimal point go? (a) 17.5 (b) 1.75 (c) 175 (d) 0.175
35. 35.9.4 × 6 — where does the decimal point go? (a) 564 (b) 0.564 (c) 56.4 (d) 5.64
36. 36.0.61 × 5 — where does the decimal point go? (a) 30.5 (b) 0.305 (c) 3.05 (d) 0.0305
37. 37.0.76 × 3 — where does the decimal point go? (a) 0.0228 (b) 0.228 (c) 22.8 (d) 2.28
38. 38.3.9 × 4.6 — where does the decimal point go? (a) 179.4 (b) 1.794 (c) 17.94 (d) 0.1794
39. 39.3.2 × 0.2 — where does the decimal point go? (a) 0.0064 (b) 6.4 (c) 0.064 (d) 0.64
40. 40.0.49 × 2 — where does the decimal point go? (a) 0.098 (b) 0.98 (c) 9.8 (d) 0.0098

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