Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 516 · 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. 1.9.7 × 3 — where does the decimal point go? (a) 2.91 (b) 29.1 (c) 0.291 (d) 291
2. 2.0.93 × 3.8 — where does the decimal point go? (a) 0.3534 (b) 35.34 (c) 0.03534 (d) 3.534
3. 3.0.36 × 26 — where does the decimal point go? (a) 0.936 (b) 93.6 (c) 0.0936 (d) 9.36
4. 4.0.41 × 2 — where does the decimal point go? (a) 0.082 (b) 8.2 (c) 0.82 (d) 0.0082
5. 5.0.23 × 0.5 — where does the decimal point go? (a) 0.115 (b) 0.0115 (c) 1.15 (d) 0.00115
6. 6.5.6 × 4.8 — where does the decimal point go? (a) 2.688 (b) 268.8 (c) 26.88 (d) 0.2688
7. 7.0.16 × 2.7 — where does the decimal point go? (a) 0.0432 (b) 0.00432 (c) 4.32 (d) 0.432
8. 8.7.3 × 8 — where does the decimal point go? (a) 58.4 (b) 0.584 (c) 5.84 (d) 584
9. 9.0.57 × 3.6 — where does the decimal point go? (a) 0.2052 (b) 20.52 (c) 2.052 (d) 0.02052
10. 10.0.94 × 8 — where does the decimal point go? (a) 0.0752 (b) 7.52 (c) 75.2 (d) 0.752
11. 11.0.79 × 3.5 — where does the decimal point go? (a) 0.2765 (b) 27.65 (c) 2.765 (d) 0.02765
12. 12.0.37 × 1.2 — where does the decimal point go? (a) 0.0444 (b) 4.44 (c) 0.444 (d) 0.00444
13. 13.1.9 × 33 — where does the decimal point go? (a) 62.7 (b) 6.27 (c) 627 (d) 0.627
14. 14.0.86 × 4.4 — where does the decimal point go? (a) 0.03784 (b) 37.84 (c) 3.784 (d) 0.3784
15. 15.1.7 × 8 — where does the decimal point go? (a) 13.6 (b) 1.36 (c) 136 (d) 0.136
16. 16.3.3 × 18 — where does the decimal point go? (a) 5.94 (b) 0.594 (c) 59.4 (d) 594
17. 17.3.6 × 0.4 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 14.4 (d) 0.0144
18. 18.7.5 × 35 — where does the decimal point go? (a) 26.25 (b) 2625 (c) 2.625 (d) 262.5
19. 19.9.7 × 6 — where does the decimal point go? (a) 58.2 (b) 0.582 (c) 5.82 (d) 582
20. 20.4.9 × 0.9 — where does the decimal point go? (a) 44.1 (b) 4.41 (c) 0.441 (d) 0.0441
21. 21.1.4 × 7 — where does the decimal point go? (a) 9.8 (b) 0.098 (c) 98 (d) 0.98
22. 22.0.73 × 0.5 — where does the decimal point go? (a) 3.65 (b) 0.0365 (c) 0.00365 (d) 0.365
23. 23.0.29 × 2.6 — where does the decimal point go? (a) 0.754 (b) 7.54 (c) 0.00754 (d) 0.0754
24. 24.0.82 × 9 — where does the decimal point go? (a) 7.38 (b) 73.8 (c) 0.738 (d) 0.0738
25. 25.8.6 × 0.4 — where does the decimal point go? (a) 3.44 (b) 0.0344 (c) 0.344 (d) 34.4
26. 26.0.34 × 1.2 — where does the decimal point go? (a) 0.00408 (b) 0.0408 (c) 0.408 (d) 4.08
27. 27.5.4 × 2.7 — where does the decimal point go? (a) 14.58 (b) 1.458 (c) 145.8 (d) 0.1458
28. 28.8.1 × 0.5 — where does the decimal point go? (a) 0.0405 (b) 4.05 (c) 40.5 (d) 0.405
29. 29.8.7 × 8 — where does the decimal point go? (a) 696 (b) 69.6 (c) 6.96 (d) 0.696
30. 30.4.1 × 24 — where does the decimal point go? (a) 98.4 (b) 0.984 (c) 984 (d) 9.84
31. 31.0.12 × 41 — where does the decimal point go? (a) 0.0492 (b) 0.492 (c) 49.2 (d) 4.92
32. 32.0.46 × 0.8 — where does the decimal point go? (a) 0.368 (b) 3.68 (c) 0.00368 (d) 0.0368
33. 33.0.63 × 1.7 — where does the decimal point go? (a) 0.01071 (b) 0.1071 (c) 1.071 (d) 10.71
34. 34.0.51 × 0.2 — where does the decimal point go? (a) 0.102 (b) 1.02 (c) 0.00102 (d) 0.0102
35. 35.0.94 × 17 — where does the decimal point go? (a) 15.98 (b) 159.8 (c) 0.1598 (d) 1.598
36. 36.5.4 × 38 — where does the decimal point go? (a) 20.52 (b) 2052 (c) 2.052 (d) 205.2
37. 37.0.66 × 7 — where does the decimal point go? (a) 0.462 (b) 4.62 (c) 46.2 (d) 0.0462
38. 38.2.1 × 17 — where does the decimal point go? (a) 3.57 (b) 357 (c) 0.357 (d) 35.7
39. 39.1.8 × 3.1 — where does the decimal point go? (a) 55.8 (b) 5.58 (c) 0.558 (d) 0.0558
40. 40.0.47 × 0.6 — where does the decimal point go? (a) 0.00282 (b) 0.0282 (c) 2.82 (d) 0.282

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