Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 601 · 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. 1.7.1 × 0.4 — where does the decimal point go? (a) 28.4 (b) 0.0284 (c) 0.284 (d) 2.84
2. 2.1.4 × 4.4 — where does the decimal point go? (a) 0.616 (b) 6.16 (c) 0.0616 (d) 61.6
3. 3.4.1 × 2 — where does the decimal point go? (a) 0.82 (b) 0.082 (c) 8.2 (d) 82
4. 4.8.2 × 8 — where does the decimal point go? (a) 656 (b) 0.656 (c) 65.6 (d) 6.56
5. 5.0.73 × 4.5 — where does the decimal point go? (a) 0.03285 (b) 3.285 (c) 32.85 (d) 0.3285
6. 6.4.6 × 0.2 — where does the decimal point go? (a) 0.92 (b) 9.2 (c) 0.0092 (d) 0.092
7. 7.3.8 × 2.8 — where does the decimal point go? (a) 1.064 (b) 106.4 (c) 10.64 (d) 0.1064
8. 8.0.89 × 25 — where does the decimal point go? (a) 22.25 (b) 222.5 (c) 0.2225 (d) 2.225
9. 9.5.5 × 9 — where does the decimal point go? (a) 495 (b) 0.495 (c) 49.5 (d) 4.95
10. 10.6.1 × 0.5 — where does the decimal point go? (a) 30.5 (b) 0.305 (c) 0.0305 (d) 3.05
11. 11.9.9 × 0.6 — where does the decimal point go? (a) 0.0594 (b) 59.4 (c) 5.94 (d) 0.594
12. 12.0.69 × 2.7 — where does the decimal point go? (a) 0.01863 (b) 1.863 (c) 0.1863 (d) 18.63
13. 13.0.65 × 3 — where does the decimal point go? (a) 1.95 (b) 19.5 (c) 0.0195 (d) 0.195
14. 14.6.9 × 2.4 — where does the decimal point go? (a) 1.656 (b) 165.6 (c) 0.1656 (d) 16.56
15. 15.0.89 × 39 — where does the decimal point go? (a) 34.71 (b) 0.3471 (c) 3.471 (d) 347.1
16. 16.8.6 × 24 — where does the decimal point go? (a) 2064 (b) 206.4 (c) 2.064 (d) 20.64
17. 17.1.8 × 33 — where does the decimal point go? (a) 59.4 (b) 0.594 (c) 594 (d) 5.94
18. 18.5.4 × 0.9 — where does the decimal point go? (a) 4.86 (b) 0.486 (c) 48.6 (d) 0.0486
19. 19.0.42 × 4 — where does the decimal point go? (a) 0.0168 (b) 16.8 (c) 0.168 (d) 1.68
20. 20.0.72 × 32 — where does the decimal point go? (a) 0.2304 (b) 230.4 (c) 2.304 (d) 23.04
21. 21.0.95 × 0.3 — where does the decimal point go? (a) 0.0285 (b) 0.285 (c) 2.85 (d) 0.00285
22. 22.0.73 × 5 — where does the decimal point go? (a) 36.5 (b) 3.65 (c) 0.365 (d) 0.0365
23. 23.2.8 × 1.2 — where does the decimal point go? (a) 3.36 (b) 0.0336 (c) 0.336 (d) 33.6
24. 24.9.9 × 5 — where does the decimal point go? (a) 495 (b) 0.495 (c) 49.5 (d) 4.95
25. 25.0.96 × 0.8 — where does the decimal point go? (a) 0.768 (b) 0.00768 (c) 7.68 (d) 0.0768
26. 26.0.24 × 16 — where does the decimal point go? (a) 38.4 (b) 0.384 (c) 0.0384 (d) 3.84
27. 27.2.7 × 2 — where does the decimal point go? (a) 54 (b) 0.54 (c) 5.4 (d) 0.054
28. 28.0.99 × 0.5 — where does the decimal point go? (a) 0.00495 (b) 4.95 (c) 0.0495 (d) 0.495
29. 29.2.3 × 0.8 — where does the decimal point go? (a) 0.0184 (b) 18.4 (c) 0.184 (d) 1.84
30. 30.8.1 × 0.4 — where does the decimal point go? (a) 32.4 (b) 0.324 (c) 3.24 (d) 0.0324
31. 31.8.6 × 4.4 — where does the decimal point go? (a) 0.3784 (b) 3.784 (c) 378.4 (d) 37.84
32. 32.0.39 × 15 — where does the decimal point go? (a) 5.85 (b) 0.585 (c) 58.5 (d) 0.0585
33. 33.4.2 × 16 — where does the decimal point go? (a) 6.72 (b) 0.672 (c) 672 (d) 67.2
34. 34.6.3 × 19 — where does the decimal point go? (a) 119.7 (b) 11.97 (c) 1197 (d) 1.197
35. 35.1.4 × 4 — where does the decimal point go? (a) 0.56 (b) 56 (c) 0.056 (d) 5.6
36. 36.3.3 × 4 — where does the decimal point go? (a) 1.32 (b) 13.2 (c) 0.132 (d) 132
37. 37.8.5 × 4.1 — where does the decimal point go? (a) 34.85 (b) 3.485 (c) 348.5 (d) 0.3485
38. 38.6.2 × 0.6 — where does the decimal point go? (a) 0.372 (b) 37.2 (c) 3.72 (d) 0.0372
39. 39.2.3 × 43 — where does the decimal point go? (a) 0.989 (b) 98.9 (c) 989 (d) 9.89
40. 40.5.1 × 1.5 — where does the decimal point go? (a) 0.765 (b) 76.5 (c) 0.0765 (d) 7.65

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