Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 763 · 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. 1.3.6 × 0.9 — where does the decimal point go? (a) 32.4 (b) 0.324 (c) 3.24 (d) 0.0324
2. 2.9.9 × 4.2 — where does the decimal point go? (a) 4.158 (b) 41.58 (c) 0.4158 (d) 415.8
3. 3.9.8 × 8 — where does the decimal point go? (a) 0.784 (b) 784 (c) 7.84 (d) 78.4
4. 4.3.3 × 8 — where does the decimal point go? (a) 2.64 (b) 26.4 (c) 264 (d) 0.264
5. 5.4.4 × 0.7 — where does the decimal point go? (a) 3.08 (b) 0.308 (c) 0.0308 (d) 30.8
6. 6.6.4 × 34 — where does the decimal point go? (a) 2176 (b) 2.176 (c) 217.6 (d) 21.76
7. 7.2.2 × 7 — where does the decimal point go? (a) 1.54 (b) 0.154 (c) 15.4 (d) 154
8. 8.3.8 × 2 — where does the decimal point go? (a) 0.76 (b) 7.6 (c) 0.076 (d) 76
9. 9.0.16 × 9 — where does the decimal point go? (a) 1.44 (b) 0.144 (c) 14.4 (d) 0.0144
10. 10.0.66 × 0.2 — where does the decimal point go? (a) 0.132 (b) 0.0132 (c) 0.00132 (d) 1.32
11. 11.9.4 × 17 — where does the decimal point go? (a) 15.98 (b) 1598 (c) 1.598 (d) 159.8
12. 12.4.1 × 1.1 — where does the decimal point go? (a) 45.1 (b) 0.0451 (c) 0.451 (d) 4.51
13. 13.0.38 × 2.3 — where does the decimal point go? (a) 0.0874 (b) 0.874 (c) 8.74 (d) 0.00874
14. 14.0.51 × 9 — where does the decimal point go? (a) 0.459 (b) 45.9 (c) 4.59 (d) 0.0459
15. 15.8.4 × 6 — where does the decimal point go? (a) 50.4 (b) 5.04 (c) 504 (d) 0.504
16. 16.0.98 × 3 — where does the decimal point go? (a) 2.94 (b) 0.0294 (c) 0.294 (d) 29.4
17. 17.0.46 × 1.7 — where does the decimal point go? (a) 0.00782 (b) 7.82 (c) 0.782 (d) 0.0782
18. 18.0.67 × 21 — where does the decimal point go? (a) 0.1407 (b) 14.07 (c) 1.407 (d) 140.7
19. 19.1.8 × 26 — where does the decimal point go? (a) 4.68 (b) 468 (c) 46.8 (d) 0.468
20. 20.0.45 × 9 — where does the decimal point go? (a) 0.405 (b) 0.0405 (c) 40.5 (d) 4.05
21. 21.0.12 × 0.2 — where does the decimal point go? (a) 0.0024 (b) 0.24 (c) 0.00024 (d) 0.024
22. 22.5.9 × 0.7 — where does the decimal point go? (a) 4.13 (b) 0.0413 (c) 0.413 (d) 41.3
23. 23.9.9 × 3 — where does the decimal point go? (a) 0.297 (b) 29.7 (c) 2.97 (d) 297
24. 24.9.3 × 3.7 — where does the decimal point go? (a) 3.441 (b) 344.1 (c) 0.3441 (d) 34.41
25. 25.7.6 × 4.1 — where does the decimal point go? (a) 3.116 (b) 0.3116 (c) 311.6 (d) 31.16
26. 26.8.1 × 4.4 — where does the decimal point go? (a) 35.64 (b) 3.564 (c) 356.4 (d) 0.3564
27. 27.0.76 × 43 — where does the decimal point go? (a) 326.8 (b) 0.3268 (c) 3.268 (d) 32.68
28. 28.4.9 × 0.4 — where does the decimal point go? (a) 0.196 (b) 19.6 (c) 0.0196 (d) 1.96
29. 29.3.2 × 1.3 — where does the decimal point go? (a) 0.0416 (b) 41.6 (c) 4.16 (d) 0.416
30. 30.0.47 × 0.3 — where does the decimal point go? (a) 0.0141 (b) 1.41 (c) 0.00141 (d) 0.141
31. 31.7.1 × 1.1 — where does the decimal point go? (a) 0.781 (b) 78.1 (c) 7.81 (d) 0.0781
32. 32.0.14 × 49 — where does the decimal point go? (a) 0.686 (b) 6.86 (c) 0.0686 (d) 68.6
33. 33.0.25 × 0.9 — where does the decimal point go? (a) 0.00225 (b) 2.25 (c) 0.0225 (d) 0.225
34. 34.0.94 × 3 — where does the decimal point go? (a) 0.282 (b) 28.2 (c) 2.82 (d) 0.0282
35. 35.0.14 × 8 — where does the decimal point go? (a) 1.12 (b) 0.112 (c) 0.0112 (d) 11.2
36. 36.0.54 × 12 — where does the decimal point go? (a) 6.48 (b) 64.8 (c) 0.648 (d) 0.0648
37. 37.1.3 × 4 — where does the decimal point go? (a) 0.52 (b) 0.052 (c) 52 (d) 5.2
38. 38.0.23 × 15 — where does the decimal point go? (a) 0.345 (b) 0.0345 (c) 34.5 (d) 3.45
39. 39.3.3 × 0.3 — where does the decimal point go? (a) 0.099 (b) 0.99 (c) 9.9 (d) 0.0099
40. 40.3.1 × 4.6 — where does the decimal point go? (a) 142.6 (b) 0.1426 (c) 14.26 (d) 1.426

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