Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 432 · 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. 1.1.4 × 16 — where does the decimal point go? (a) 22.4 (b) 2.24 (c) 224 (d) 0.224
2. 2.0.27 × 7 — where does the decimal point go? (a) 18.9 (b) 0.189 (c) 1.89 (d) 0.0189
3. 3.3.7 × 0.6 — where does the decimal point go? (a) 0.0222 (b) 22.2 (c) 0.222 (d) 2.22
4. 4.9.7 × 14 — where does the decimal point go? (a) 135.8 (b) 13.58 (c) 1358 (d) 1.358
5. 5.2.6 × 49 — where does the decimal point go? (a) 127.4 (b) 12.74 (c) 1274 (d) 1.274
6. 6.0.78 × 36 — where does the decimal point go? (a) 28.08 (b) 280.8 (c) 0.2808 (d) 2.808
7. 7.0.49 × 29 — where does the decimal point go? (a) 142.1 (b) 0.1421 (c) 1.421 (d) 14.21
8. 8.0.78 × 2 — where does the decimal point go? (a) 15.6 (b) 1.56 (c) 0.0156 (d) 0.156
9. 9.0.44 × 4.2 — where does the decimal point go? (a) 18.48 (b) 0.01848 (c) 0.1848 (d) 1.848
10. 10.5.1 × 36 — where does the decimal point go? (a) 1836 (b) 18.36 (c) 183.6 (d) 1.836
11. 11.0.71 × 2 — where does the decimal point go? (a) 0.0142 (b) 0.142 (c) 14.2 (d) 1.42
12. 12.0.33 × 2.5 — where does the decimal point go? (a) 8.25 (b) 0.00825 (c) 0.0825 (d) 0.825
13. 13.0.84 × 17 — where does the decimal point go? (a) 14.28 (b) 142.8 (c) 0.1428 (d) 1.428
14. 14.0.25 × 4.3 — where does the decimal point go? (a) 0.1075 (b) 1.075 (c) 10.75 (d) 0.01075
15. 15.7.1 × 19 — where does the decimal point go? (a) 1349 (b) 1.349 (c) 13.49 (d) 134.9
16. 16.0.52 × 19 — where does the decimal point go? (a) 98.8 (b) 9.88 (c) 0.0988 (d) 0.988
17. 17.0.26 × 0.9 — where does the decimal point go? (a) 0.0234 (b) 0.00234 (c) 2.34 (d) 0.234
18. 18.1.9 × 17 — where does the decimal point go? (a) 3.23 (b) 323 (c) 0.323 (d) 32.3
19. 19.4.3 × 1.7 — where does the decimal point go? (a) 7.31 (b) 0.0731 (c) 73.1 (d) 0.731
20. 20.6.3 × 3.7 — where does the decimal point go? (a) 233.1 (b) 2.331 (c) 23.31 (d) 0.2331
21. 21.0.44 × 9 — where does the decimal point go? (a) 39.6 (b) 0.396 (c) 3.96 (d) 0.0396
22. 22.8.4 × 23 — where does the decimal point go? (a) 19.32 (b) 1932 (c) 1.932 (d) 193.2
23. 23.0.29 × 4.6 — where does the decimal point go? (a) 1.334 (b) 0.1334 (c) 0.01334 (d) 13.34
24. 24.3.6 × 2.3 — where does the decimal point go? (a) 8.28 (b) 0.828 (c) 82.8 (d) 0.0828
25. 25.1.4 × 22 — where does the decimal point go? (a) 30.8 (b) 3.08 (c) 0.308 (d) 308
26. 26.0.71 × 41 — where does the decimal point go? (a) 2.911 (b) 291.1 (c) 0.2911 (d) 29.11
27. 27.7.9 × 4 — where does the decimal point go? (a) 31.6 (b) 0.316 (c) 316 (d) 3.16
28. 28.5.4 × 0.7 — where does the decimal point go? (a) 3.78 (b) 0.0378 (c) 37.8 (d) 0.378
29. 29.0.62 × 9 — where does the decimal point go? (a) 0.558 (b) 5.58 (c) 0.0558 (d) 55.8
30. 30.6.2 × 0.3 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 18.6
31. 31.5.3 × 2.7 — where does the decimal point go? (a) 143.1 (b) 14.31 (c) 1.431 (d) 0.1431
32. 32.0.69 × 9 — where does the decimal point go? (a) 62.1 (b) 0.621 (c) 6.21 (d) 0.0621
33. 33.1.3 × 2.1 — where does the decimal point go? (a) 0.273 (b) 27.3 (c) 0.0273 (d) 2.73
34. 34.5.9 × 3 — where does the decimal point go? (a) 0.177 (b) 177 (c) 17.7 (d) 1.77
35. 35.2.2 × 18 — where does the decimal point go? (a) 0.396 (b) 396 (c) 3.96 (d) 39.6
36. 36.0.94 × 28 — where does the decimal point go? (a) 26.32 (b) 0.2632 (c) 263.2 (d) 2.632
37. 37.0.51 × 8 — where does the decimal point go? (a) 0.0408 (b) 0.408 (c) 4.08 (d) 40.8
38. 38.5.8 × 2 — where does the decimal point go? (a) 0.116 (b) 1.16 (c) 11.6 (d) 116
39. 39.8.3 × 3.4 — where does the decimal point go? (a) 0.2822 (b) 28.22 (c) 2.822 (d) 282.2
40. 40.8.8 × 1.2 — where does the decimal point go? (a) 10.56 (b) 0.1056 (c) 1.056 (d) 105.6

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