Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 326 · 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. 1.7.9 × 0.8 — where does the decimal point go? (a) 63.2 (b) 0.632 (c) 6.32 (d) 0.0632
2. 2.0.32 × 3 — where does the decimal point go? (a) 0.096 (b) 9.6 (c) 0.0096 (d) 0.96
3. 3.5.9 × 46 — where does the decimal point go? (a) 27.14 (b) 2.714 (c) 2714 (d) 271.4
4. 4.0.44 × 2 — where does the decimal point go? (a) 8.8 (b) 0.088 (c) 0.88 (d) 0.0088
5. 5.6.7 × 3.9 — where does the decimal point go? (a) 261.3 (b) 2.613 (c) 0.2613 (d) 26.13
6. 6.0.22 × 3 — where does the decimal point go? (a) 0.0066 (b) 0.66 (c) 6.6 (d) 0.066
7. 7.3.2 × 19 — where does the decimal point go? (a) 6.08 (b) 608 (c) 60.8 (d) 0.608
8. 8.4.1 × 3.9 — where does the decimal point go? (a) 15.99 (b) 0.1599 (c) 1.599 (d) 159.9
9. 9.1.7 × 0.3 — where does the decimal point go? (a) 0.051 (b) 0.51 (c) 5.1 (d) 0.0051
10. 10.0.48 × 4.6 — where does the decimal point go? (a) 2.208 (b) 0.02208 (c) 22.08 (d) 0.2208
11. 11.0.88 × 0.4 — where does the decimal point go? (a) 3.52 (b) 0.352 (c) 0.00352 (d) 0.0352
12. 12.3.9 × 19 — where does the decimal point go? (a) 74.1 (b) 741 (c) 0.741 (d) 7.41
13. 13.4.8 × 7 — where does the decimal point go? (a) 0.336 (b) 33.6 (c) 336 (d) 3.36
14. 14.0.31 × 1.4 — where does the decimal point go? (a) 4.34 (b) 0.00434 (c) 0.0434 (d) 0.434
15. 15.0.35 × 0.7 — where does the decimal point go? (a) 0.245 (b) 0.00245 (c) 2.45 (d) 0.0245
16. 16.0.38 × 8 — where does the decimal point go? (a) 3.04 (b) 0.304 (c) 0.0304 (d) 30.4
17. 17.7.3 × 0.5 — where does the decimal point go? (a) 3.65 (b) 36.5 (c) 0.365 (d) 0.0365
18. 18.1.8 × 0.9 — where does the decimal point go? (a) 16.2 (b) 1.62 (c) 0.162 (d) 0.0162
19. 19.0.93 × 0.5 — where does the decimal point go? (a) 0.0465 (b) 0.465 (c) 4.65 (d) 0.00465
20. 20.3.9 × 0.9 — where does the decimal point go? (a) 3.51 (b) 0.0351 (c) 0.351 (d) 35.1
21. 21.1.4 × 48 — where does the decimal point go? (a) 672 (b) 0.672 (c) 6.72 (d) 67.2
22. 22.0.97 × 21 — where does the decimal point go? (a) 20.37 (b) 2.037 (c) 203.7 (d) 0.2037
23. 23.0.74 × 49 — where does the decimal point go? (a) 362.6 (b) 36.26 (c) 0.3626 (d) 3.626
24. 24.5.3 × 0.4 — where does the decimal point go? (a) 2.12 (b) 0.0212 (c) 21.2 (d) 0.212
25. 25.0.67 × 19 — where does the decimal point go? (a) 0.1273 (b) 12.73 (c) 127.3 (d) 1.273
26. 26.0.73 × 0.6 — where does the decimal point go? (a) 4.38 (b) 0.00438 (c) 0.0438 (d) 0.438
27. 27.7.6 × 0.2 — where does the decimal point go? (a) 0.152 (b) 15.2 (c) 1.52 (d) 0.0152
28. 28.1.3 × 3 — where does the decimal point go? (a) 0.039 (b) 3.9 (c) 0.39 (d) 39
29. 29.4.7 × 0.5 — where does the decimal point go? (a) 0.235 (b) 2.35 (c) 23.5 (d) 0.0235
30. 30.1.3 × 6 — where does the decimal point go? (a) 7.8 (b) 0.078 (c) 0.78 (d) 78
31. 31.0.12 × 32 — where does the decimal point go? (a) 0.0384 (b) 3.84 (c) 38.4 (d) 0.384
32. 32.5.9 × 22 — where does the decimal point go? (a) 129.8 (b) 12.98 (c) 1.298 (d) 1298
33. 33.3.3 × 47 — where does the decimal point go? (a) 1551 (b) 1.551 (c) 155.1 (d) 15.51
34. 34.0.25 × 13 — where does the decimal point go? (a) 0.0325 (b) 32.5 (c) 0.325 (d) 3.25
35. 35.0.58 × 0.3 — where does the decimal point go? (a) 0.00174 (b) 0.0174 (c) 0.174 (d) 1.74
36. 36.2.9 × 0.3 — where does the decimal point go? (a) 0.0087 (b) 8.7 (c) 0.087 (d) 0.87
37. 37.0.64 × 3 — where does the decimal point go? (a) 1.92 (b) 0.0192 (c) 19.2 (d) 0.192
38. 38.9.4 × 6 — where does the decimal point go? (a) 564 (b) 5.64 (c) 0.564 (d) 56.4
39. 39.6.9 × 0.4 — where does the decimal point go? (a) 0.276 (b) 0.0276 (c) 27.6 (d) 2.76
40. 40.8.9 × 5 — where does the decimal point go? (a) 4.45 (b) 445 (c) 0.445 (d) 44.5

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