Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 647 · 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. 1.6.6 × 6 — where does the decimal point go? (a) 396 (b) 0.396 (c) 39.6 (d) 3.96
2. 2.1.5 × 3 — where does the decimal point go? (a) 0.45 (b) 4.5 (c) 45 (d) 0.045
3. 3.0.78 × 2.9 — where does the decimal point go? (a) 2.262 (b) 0.2262 (c) 22.62 (d) 0.02262
4. 4.9.3 × 7 — where does the decimal point go? (a) 651 (b) 65.1 (c) 0.651 (d) 6.51
5. 5.0.67 × 5 — where does the decimal point go? (a) 33.5 (b) 0.335 (c) 3.35 (d) 0.0335
6. 6.0.96 × 8 — where does the decimal point go? (a) 0.768 (b) 7.68 (c) 0.0768 (d) 76.8
7. 7.3.3 × 7 — where does the decimal point go? (a) 0.231 (b) 2.31 (c) 23.1 (d) 231
8. 8.0.57 × 48 — where does the decimal point go? (a) 0.2736 (b) 27.36 (c) 2.736 (d) 273.6
9. 9.0.77 × 34 — where does the decimal point go? (a) 261.8 (b) 26.18 (c) 0.2618 (d) 2.618
10. 10.8.2 × 31 — where does the decimal point go? (a) 2542 (b) 2.542 (c) 25.42 (d) 254.2
11. 11.0.76 × 0.2 — where does the decimal point go? (a) 0.0152 (b) 0.00152 (c) 0.152 (d) 1.52
12. 12.8.4 × 4.1 — where does the decimal point go? (a) 34.44 (b) 3.444 (c) 0.3444 (d) 344.4
13. 13.0.82 × 2.2 — where does the decimal point go? (a) 0.1804 (b) 1.804 (c) 18.04 (d) 0.01804
14. 14.9.2 × 0.6 — where does the decimal point go? (a) 0.0552 (b) 0.552 (c) 5.52 (d) 55.2
15. 15.3.7 × 49 — where does the decimal point go? (a) 1.813 (b) 1813 (c) 18.13 (d) 181.3
16. 16.2.9 × 3.4 — where does the decimal point go? (a) 0.986 (b) 0.0986 (c) 98.6 (d) 9.86
17. 17.0.89 × 0.6 — where does the decimal point go? (a) 0.534 (b) 5.34 (c) 0.00534 (d) 0.0534
18. 18.0.95 × 47 — where does the decimal point go? (a) 44.65 (b) 446.5 (c) 4.465 (d) 0.4465
19. 19.2.3 × 0.3 — where does the decimal point go? (a) 0.069 (b) 6.9 (c) 0.69 (d) 0.0069
20. 20.0.13 × 27 — where does the decimal point go? (a) 3.51 (b) 35.1 (c) 0.351 (d) 0.0351
21. 21.3.4 × 0.9 — where does the decimal point go? (a) 3.06 (b) 30.6 (c) 0.0306 (d) 0.306
22. 22.0.31 × 0.3 — where does the decimal point go? (a) 0.093 (b) 0.00093 (c) 0.93 (d) 0.0093
23. 23.0.36 × 2.9 — where does the decimal point go? (a) 1.044 (b) 0.01044 (c) 0.1044 (d) 10.44
24. 24.9.5 × 3.3 — where does the decimal point go? (a) 0.3135 (b) 3.135 (c) 31.35 (d) 313.5
25. 25.7.7 × 41 — where does the decimal point go? (a) 31.57 (b) 3157 (c) 3.157 (d) 315.7
26. 26.0.74 × 0.3 — where does the decimal point go? (a) 0.0222 (b) 2.22 (c) 0.222 (d) 0.00222
27. 27.8.2 × 13 — where does the decimal point go? (a) 106.6 (b) 10.66 (c) 1.066 (d) 1066
28. 28.6.5 × 31 — where does the decimal point go? (a) 20.15 (b) 2.015 (c) 201.5 (d) 2015
29. 29.0.84 × 0.2 — where does the decimal point go? (a) 0.00168 (b) 0.0168 (c) 0.168 (d) 1.68
30. 30.2.5 × 0.3 — where does the decimal point go? (a) 0.75 (b) 0.0075 (c) 0.075 (d) 7.5
31. 31.0.47 × 0.9 — where does the decimal point go? (a) 0.423 (b) 0.00423 (c) 4.23 (d) 0.0423
32. 32.0.62 × 0.4 — where does the decimal point go? (a) 2.48 (b) 0.248 (c) 0.00248 (d) 0.0248
33. 33.0.12 × 0.4 — where does the decimal point go? (a) 0.48 (b) 0.00048 (c) 0.0048 (d) 0.048
34. 34.0.52 × 48 — where does the decimal point go? (a) 249.6 (b) 24.96 (c) 2.496 (d) 0.2496
35. 35.7.3 × 2 — where does the decimal point go? (a) 146 (b) 14.6 (c) 0.146 (d) 1.46
36. 36.0.79 × 9 — where does the decimal point go? (a) 0.0711 (b) 71.1 (c) 0.711 (d) 7.11
37. 37.9.9 × 9 — where does the decimal point go? (a) 8.91 (b) 891 (c) 89.1 (d) 0.891
38. 38.0.17 × 14 — where does the decimal point go? (a) 23.8 (b) 0.0238 (c) 0.238 (d) 2.38
39. 39.0.95 × 0.3 — where does the decimal point go? (a) 0.00285 (b) 0.285 (c) 0.0285 (d) 2.85
40. 40.7.8 × 41 — where does the decimal point go? (a) 3.198 (b) 3198 (c) 319.8 (d) 31.98

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