Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 969 · 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. 1.6.7 × 4 — where does the decimal point go? (a) 2.68 (b) 26.8 (c) 0.268 (d) 268
2. 2.7.1 × 23 — where does the decimal point go? (a) 1633 (b) 1.633 (c) 16.33 (d) 163.3
3. 3.3.6 × 0.4 — where does the decimal point go? (a) 0.0144 (b) 1.44 (c) 14.4 (d) 0.144
4. 4.6.2 × 19 — where does the decimal point go? (a) 117.8 (b) 11.78 (c) 1178 (d) 1.178
5. 5.0.42 × 47 — where does the decimal point go? (a) 1.974 (b) 0.1974 (c) 197.4 (d) 19.74
6. 6.0.61 × 6 — where does the decimal point go? (a) 0.0366 (b) 3.66 (c) 36.6 (d) 0.366
7. 7.6.5 × 0.3 — where does the decimal point go? (a) 0.0195 (b) 19.5 (c) 1.95 (d) 0.195
8. 8.0.88 × 6 — where does the decimal point go? (a) 52.8 (b) 5.28 (c) 0.0528 (d) 0.528
9. 9.1.6 × 0.8 — where does the decimal point go? (a) 1.28 (b) 0.128 (c) 12.8 (d) 0.0128
10. 10.0.91 × 34 — where does the decimal point go? (a) 3.094 (b) 30.94 (c) 0.3094 (d) 309.4
11. 11.2.9 × 2.1 — where does the decimal point go? (a) 0.609 (b) 6.09 (c) 0.0609 (d) 60.9
12. 12.9.4 × 1.7 — where does the decimal point go? (a) 0.1598 (b) 15.98 (c) 159.8 (d) 1.598
13. 13.0.36 × 7 — where does the decimal point go? (a) 25.2 (b) 0.252 (c) 2.52 (d) 0.0252
14. 14.1.6 × 6 — where does the decimal point go? (a) 96 (b) 9.6 (c) 0.096 (d) 0.96
15. 15.0.69 × 7 — where does the decimal point go? (a) 0.0483 (b) 48.3 (c) 4.83 (d) 0.483
16. 16.0.64 × 9 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 57.6 (d) 0.0576
17. 17.0.51 × 33 — where does the decimal point go? (a) 1.683 (b) 0.1683 (c) 168.3 (d) 16.83
18. 18.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.126 (d) 12.6
19. 19.0.33 × 3 — where does the decimal point go? (a) 0.0099 (b) 0.099 (c) 0.99 (d) 9.9
20. 20.4.5 × 35 — where does the decimal point go? (a) 157.5 (b) 15.75 (c) 1575 (d) 1.575
21. 21.0.33 × 12 — where does the decimal point go? (a) 0.396 (b) 39.6 (c) 0.0396 (d) 3.96
22. 22.0.31 × 2 — where does the decimal point go? (a) 0.62 (b) 0.0062 (c) 0.062 (d) 6.2
23. 23.3.2 × 4 — where does the decimal point go? (a) 0.128 (b) 12.8 (c) 1.28 (d) 128
24. 24.1.8 × 0.9 — where does the decimal point go? (a) 0.162 (b) 16.2 (c) 0.0162 (d) 1.62
25. 25.0.44 × 0.2 — where does the decimal point go? (a) 0.0088 (b) 0.00088 (c) 0.088 (d) 0.88
26. 26.7.1 × 0.3 — where does the decimal point go? (a) 2.13 (b) 0.213 (c) 0.0213 (d) 21.3
27. 27.0.79 × 7 — where does the decimal point go? (a) 55.3 (b) 5.53 (c) 0.0553 (d) 0.553
28. 28.7.3 × 9 — where does the decimal point go? (a) 0.657 (b) 6.57 (c) 65.7 (d) 657
29. 29.3.1 × 19 — where does the decimal point go? (a) 589 (b) 58.9 (c) 5.89 (d) 0.589
30. 30.3.7 × 0.2 — where does the decimal point go? (a) 0.74 (b) 0.0074 (c) 7.4 (d) 0.074
31. 31.0.73 × 2 — where does the decimal point go? (a) 0.146 (b) 1.46 (c) 14.6 (d) 0.0146
32. 32.7.3 × 4.7 — where does the decimal point go? (a) 34.31 (b) 3.431 (c) 0.3431 (d) 343.1
33. 33.7.9 × 2.4 — where does the decimal point go? (a) 0.1896 (b) 189.6 (c) 1.896 (d) 18.96
34. 34.0.23 × 14 — where does the decimal point go? (a) 3.22 (b) 32.2 (c) 0.0322 (d) 0.322
35. 35.0.47 × 26 — where does the decimal point go? (a) 1.222 (b) 122.2 (c) 0.1222 (d) 12.22
36. 36.0.46 × 37 — where does the decimal point go? (a) 17.02 (b) 0.1702 (c) 1.702 (d) 170.2
37. 37.2.9 × 2 — where does the decimal point go? (a) 5.8 (b) 58 (c) 0.058 (d) 0.58
38. 38.8.1 × 0.3 — where does the decimal point go? (a) 2.43 (b) 0.0243 (c) 24.3 (d) 0.243
39. 39.2.4 × 9 — where does the decimal point go? (a) 2.16 (b) 21.6 (c) 0.216 (d) 216
40. 40.1.9 × 35 — where does the decimal point go? (a) 665 (b) 0.665 (c) 66.5 (d) 6.65

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