Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 531 · 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. 1.9.6 × 4.6 — where does the decimal point go? (a) 4.416 (b) 441.6 (c) 0.4416 (d) 44.16
2. 2.7.3 × 9 — where does the decimal point go? (a) 65.7 (b) 657 (c) 0.657 (d) 6.57
3. 3.4.3 × 2 — where does the decimal point go? (a) 0.086 (b) 0.86 (c) 8.6 (d) 86
4. 4.0.29 × 1.3 — where does the decimal point go? (a) 0.377 (b) 0.00377 (c) 0.0377 (d) 3.77
5. 5.0.99 × 8 — where does the decimal point go? (a) 0.0792 (b) 79.2 (c) 7.92 (d) 0.792
6. 6.0.96 × 21 — where does the decimal point go? (a) 0.2016 (b) 20.16 (c) 201.6 (d) 2.016
7. 7.0.44 × 3 — where does the decimal point go? (a) 0.132 (b) 1.32 (c) 0.0132 (d) 13.2
8. 8.6.8 × 8 — where does the decimal point go? (a) 5.44 (b) 54.4 (c) 0.544 (d) 544
9. 9.0.15 × 7 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 1.05 (d) 10.5
10. 10.1.7 × 3.2 — where does the decimal point go? (a) 5.44 (b) 0.544 (c) 54.4 (d) 0.0544
11. 11.5.7 × 6 — where does the decimal point go? (a) 342 (b) 3.42 (c) 34.2 (d) 0.342
12. 12.9.6 × 4.9 — where does the decimal point go? (a) 4.704 (b) 0.4704 (c) 470.4 (d) 47.04
13. 13.0.82 × 0.9 — where does the decimal point go? (a) 7.38 (b) 0.0738 (c) 0.738 (d) 0.00738
14. 14.0.89 × 44 — where does the decimal point go? (a) 3.916 (b) 0.3916 (c) 39.16 (d) 391.6
15. 15.0.82 × 14 — where does the decimal point go? (a) 1.148 (b) 11.48 (c) 114.8 (d) 0.1148
16. 16.4.8 × 0.7 — where does the decimal point go? (a) 33.6 (b) 0.336 (c) 0.0336 (d) 3.36
17. 17.8.5 × 35 — where does the decimal point go? (a) 29.75 (b) 2975 (c) 297.5 (d) 2.975
18. 18.3.4 × 0.8 — where does the decimal point go? (a) 0.272 (b) 2.72 (c) 0.0272 (d) 27.2
19. 19.0.91 × 0.9 — where does the decimal point go? (a) 0.0819 (b) 8.19 (c) 0.00819 (d) 0.819
20. 20.0.79 × 4.4 — where does the decimal point go? (a) 0.03476 (b) 3.476 (c) 0.3476 (d) 34.76
21. 21.5.8 × 3 — where does the decimal point go? (a) 0.174 (b) 1.74 (c) 17.4 (d) 174
22. 22.4.3 × 4.9 — where does the decimal point go? (a) 21.07 (b) 2.107 (c) 210.7 (d) 0.2107
23. 23.5.6 × 21 — where does the decimal point go? (a) 117.6 (b) 11.76 (c) 1176 (d) 1.176
24. 24.0.23 × 6 — where does the decimal point go? (a) 1.38 (b) 13.8 (c) 0.0138 (d) 0.138
25. 25.3.7 × 4 — where does the decimal point go? (a) 1.48 (b) 14.8 (c) 148 (d) 0.148
26. 26.9.6 × 8 — where does the decimal point go? (a) 768 (b) 76.8 (c) 7.68 (d) 0.768
27. 27.5.2 × 0.3 — where does the decimal point go? (a) 15.6 (b) 0.0156 (c) 1.56 (d) 0.156
28. 28.0.52 × 8 — where does the decimal point go? (a) 0.0416 (b) 0.416 (c) 4.16 (d) 41.6
29. 29.0.23 × 2.4 — where does the decimal point go? (a) 0.0552 (b) 0.00552 (c) 0.552 (d) 5.52
30. 30.9.6 × 4 — where does the decimal point go? (a) 0.384 (b) 3.84 (c) 384 (d) 38.4
31. 31.7.6 × 14 — where does the decimal point go? (a) 1.064 (b) 10.64 (c) 106.4 (d) 1064
32. 32.5.4 × 4.3 — where does the decimal point go? (a) 0.2322 (b) 2.322 (c) 23.22 (d) 232.2
33. 33.9.1 × 4 — where does the decimal point go? (a) 36.4 (b) 0.364 (c) 3.64 (d) 364
34. 34.0.49 × 29 — where does the decimal point go? (a) 0.1421 (b) 1.421 (c) 142.1 (d) 14.21
35. 35.0.71 × 35 — where does the decimal point go? (a) 24.85 (b) 0.2485 (c) 2.485 (d) 248.5
36. 36.0.66 × 0.9 — where does the decimal point go? (a) 0.594 (b) 0.00594 (c) 0.0594 (d) 5.94
37. 37.8.8 × 37 — where does the decimal point go? (a) 32.56 (b) 3.256 (c) 325.6 (d) 3256
38. 38.7.5 × 0.3 — where does the decimal point go? (a) 22.5 (b) 0.225 (c) 0.0225 (d) 2.25
39. 39.0.97 × 5 — where does the decimal point go? (a) 0.0485 (b) 0.485 (c) 48.5 (d) 4.85
40. 40.3.7 × 1.7 — where does the decimal point go? (a) 0.629 (b) 6.29 (c) 62.9 (d) 0.0629

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