Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 599 · 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. 1.7.5 × 2.5 — where does the decimal point go? (a) 1.875 (b) 187.5 (c) 18.75 (d) 0.1875
2. 2.0.45 × 17 — where does the decimal point go? (a) 7.65 (b) 76.5 (c) 0.0765 (d) 0.765
3. 3.0.28 × 4.9 — where does the decimal point go? (a) 0.01372 (b) 0.1372 (c) 13.72 (d) 1.372
4. 4.5.7 × 2.8 — where does the decimal point go? (a) 159.6 (b) 0.1596 (c) 15.96 (d) 1.596
5. 5.0.37 × 0.7 — where does the decimal point go? (a) 2.59 (b) 0.259 (c) 0.00259 (d) 0.0259
6. 6.0.54 × 1.2 — where does the decimal point go? (a) 0.00648 (b) 6.48 (c) 0.0648 (d) 0.648
7. 7.0.34 × 21 — where does the decimal point go? (a) 0.714 (b) 71.4 (c) 7.14 (d) 0.0714
8. 8.1.9 × 28 — where does the decimal point go? (a) 532 (b) 53.2 (c) 5.32 (d) 0.532
9. 9.4.6 × 0.7 — where does the decimal point go? (a) 0.322 (b) 3.22 (c) 32.2 (d) 0.0322
10. 10.0.61 × 2 — where does the decimal point go? (a) 1.22 (b) 12.2 (c) 0.122 (d) 0.0122
11. 11.0.62 × 2 — where does the decimal point go? (a) 0.0124 (b) 12.4 (c) 0.124 (d) 1.24
12. 12.0.17 × 33 — where does the decimal point go? (a) 5.61 (b) 0.0561 (c) 56.1 (d) 0.561
13. 13.0.53 × 4.8 — where does the decimal point go? (a) 2.544 (b) 0.2544 (c) 25.44 (d) 0.02544
14. 14.7.6 × 0.4 — where does the decimal point go? (a) 0.304 (b) 0.0304 (c) 30.4 (d) 3.04
15. 15.7.8 × 3 — where does the decimal point go? (a) 0.234 (b) 23.4 (c) 2.34 (d) 234
16. 16.0.31 × 3 — where does the decimal point go? (a) 0.93 (b) 0.0093 (c) 0.093 (d) 9.3
17. 17.1.2 × 4.9 — where does the decimal point go? (a) 58.8 (b) 5.88 (c) 0.588 (d) 0.0588
18. 18.1.8 × 7 — where does the decimal point go? (a) 0.126 (b) 126 (c) 1.26 (d) 12.6
19. 19.6.5 × 5 — where does the decimal point go? (a) 3.25 (b) 32.5 (c) 325 (d) 0.325
20. 20.9.9 × 2 — where does the decimal point go? (a) 19.8 (b) 1.98 (c) 0.198 (d) 198
21. 21.0.33 × 4.8 — where does the decimal point go? (a) 0.01584 (b) 0.1584 (c) 1.584 (d) 15.84
22. 22.5.7 × 16 — where does the decimal point go? (a) 9.12 (b) 912 (c) 91.2 (d) 0.912
23. 23.8.8 × 8 — where does the decimal point go? (a) 0.704 (b) 70.4 (c) 7.04 (d) 704
24. 24.7.4 × 3 — where does the decimal point go? (a) 0.222 (b) 2.22 (c) 222 (d) 22.2
25. 25.7.3 × 0.4 — where does the decimal point go? (a) 0.0292 (b) 0.292 (c) 2.92 (d) 29.2
26. 26.0.18 × 9 — where does the decimal point go? (a) 1.62 (b) 0.0162 (c) 16.2 (d) 0.162
27. 27.0.89 × 1.5 — where does the decimal point go? (a) 13.35 (b) 0.01335 (c) 0.1335 (d) 1.335
28. 28.0.89 × 32 — where does the decimal point go? (a) 2.848 (b) 0.2848 (c) 284.8 (d) 28.48
29. 29.0.46 × 0.9 — where does the decimal point go? (a) 0.0414 (b) 0.414 (c) 4.14 (d) 0.00414
30. 30.8.3 × 46 — where does the decimal point go? (a) 3818 (b) 381.8 (c) 38.18 (d) 3.818
31. 31.1.4 × 29 — where does the decimal point go? (a) 40.6 (b) 4.06 (c) 406 (d) 0.406
32. 32.4.8 × 3 — where does the decimal point go? (a) 144 (b) 14.4 (c) 1.44 (d) 0.144
33. 33.4.3 × 6 — where does the decimal point go? (a) 2.58 (b) 25.8 (c) 0.258 (d) 258
34. 34.0.27 × 0.8 — where does the decimal point go? (a) 0.00216 (b) 0.0216 (c) 0.216 (d) 2.16
35. 35.4.3 × 4.8 — where does the decimal point go? (a) 2.064 (b) 20.64 (c) 0.2064 (d) 206.4
36. 36.4.3 × 8 — where does the decimal point go? (a) 3.44 (b) 34.4 (c) 344 (d) 0.344
37. 37.8.7 × 0.9 — where does the decimal point go? (a) 0.783 (b) 0.0783 (c) 7.83 (d) 78.3
38. 38.1.6 × 1.3 — where does the decimal point go? (a) 2.08 (b) 0.208 (c) 20.8 (d) 0.0208
39. 39.6.1 × 4 — where does the decimal point go? (a) 2.44 (b) 0.244 (c) 24.4 (d) 244
40. 40.6.7 × 0.9 — where does the decimal point go? (a) 0.603 (b) 0.0603 (c) 6.03 (d) 60.3

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