Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 915 · 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. 1.7.3 × 6 — where does the decimal point go? (a) 438 (b) 43.8 (c) 0.438 (d) 4.38
2. 2.4.7 × 9 — where does the decimal point go? (a) 0.423 (b) 4.23 (c) 42.3 (d) 423
3. 3.3.4 × 31 — where does the decimal point go? (a) 105.4 (b) 10.54 (c) 1.054 (d) 1054
4. 4.3.2 × 3 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 9.6 (d) 96
5. 5.8.1 × 0.9 — where does the decimal point go? (a) 72.9 (b) 7.29 (c) 0.0729 (d) 0.729
6. 6.9.1 × 33 — where does the decimal point go? (a) 3.003 (b) 30.03 (c) 3003 (d) 300.3
7. 7.4.7 × 5 — where does the decimal point go? (a) 23.5 (b) 2.35 (c) 0.235 (d) 235
8. 8.0.68 × 3 — where does the decimal point go? (a) 0.204 (b) 0.0204 (c) 20.4 (d) 2.04
9. 9.0.38 × 3 — where does the decimal point go? (a) 0.114 (b) 11.4 (c) 1.14 (d) 0.0114
10. 10.2.2 × 3.8 — where does the decimal point go? (a) 83.6 (b) 0.836 (c) 0.0836 (d) 8.36
11. 11.0.83 × 21 — where does the decimal point go? (a) 1.743 (b) 0.1743 (c) 17.43 (d) 174.3
12. 12.0.59 × 1.2 — where does the decimal point go? (a) 0.00708 (b) 0.0708 (c) 7.08 (d) 0.708
13. 13.6.5 × 15 — where does the decimal point go? (a) 975 (b) 0.975 (c) 9.75 (d) 97.5
14. 14.0.96 × 8 — where does the decimal point go? (a) 76.8 (b) 7.68 (c) 0.768 (d) 0.0768
15. 15.3.6 × 1.4 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 0.0504 (d) 50.4
16. 16.0.98 × 13 — where does the decimal point go? (a) 127.4 (b) 12.74 (c) 1.274 (d) 0.1274
17. 17.0.53 × 1.6 — where does the decimal point go? (a) 0.0848 (b) 0.00848 (c) 0.848 (d) 8.48
18. 18.0.95 × 0.5 — where does the decimal point go? (a) 0.0475 (b) 0.475 (c) 4.75 (d) 0.00475
19. 19.1.9 × 0.9 — where does the decimal point go? (a) 17.1 (b) 0.171 (c) 0.0171 (d) 1.71
20. 20.7.6 × 6 — where does the decimal point go? (a) 0.456 (b) 4.56 (c) 456 (d) 45.6
21. 21.0.93 × 29 — where does the decimal point go? (a) 0.2697 (b) 26.97 (c) 2.697 (d) 269.7
22. 22.1.3 × 0.9 — where does the decimal point go? (a) 0.0117 (b) 1.17 (c) 11.7 (d) 0.117
23. 23.0.43 × 9 — where does the decimal point go? (a) 3.87 (b) 0.387 (c) 38.7 (d) 0.0387
24. 24.8.6 × 4.4 — where does the decimal point go? (a) 0.3784 (b) 378.4 (c) 3.784 (d) 37.84
25. 25.0.75 × 5 — where does the decimal point go? (a) 37.5 (b) 0.0375 (c) 0.375 (d) 3.75
26. 26.6.9 × 4.1 — where does the decimal point go? (a) 2.829 (b) 28.29 (c) 282.9 (d) 0.2829
27. 27.0.56 × 19 — where does the decimal point go? (a) 106.4 (b) 0.1064 (c) 1.064 (d) 10.64
28. 28.6.3 × 1.9 — where does the decimal point go? (a) 0.1197 (b) 1.197 (c) 119.7 (d) 11.97
29. 29.2.7 × 9 — where does the decimal point go? (a) 243 (b) 24.3 (c) 0.243 (d) 2.43
30. 30.1.5 × 3 — where does the decimal point go? (a) 45 (b) 0.045 (c) 0.45 (d) 4.5
31. 31.0.77 × 3 — where does the decimal point go? (a) 23.1 (b) 2.31 (c) 0.0231 (d) 0.231
32. 32.0.62 × 0.9 — where does the decimal point go? (a) 0.558 (b) 5.58 (c) 0.00558 (d) 0.0558
33. 33.1.3 × 5 — where does the decimal point go? (a) 0.065 (b) 0.65 (c) 65 (d) 6.5
34. 34.3.6 × 1.6 — where does the decimal point go? (a) 0.0576 (b) 5.76 (c) 0.576 (d) 57.6
35. 35.2.9 × 45 — where does the decimal point go? (a) 1.305 (b) 130.5 (c) 1305 (d) 13.05
36. 36.0.12 × 3.4 — where does the decimal point go? (a) 0.408 (b) 0.0408 (c) 0.00408 (d) 4.08
37. 37.0.95 × 0.7 — where does the decimal point go? (a) 0.665 (b) 0.0665 (c) 6.65 (d) 0.00665
38. 38.2.9 × 2 — where does the decimal point go? (a) 0.58 (b) 5.8 (c) 58 (d) 0.058
39. 39.0.74 × 1.6 — where does the decimal point go? (a) 1.184 (b) 11.84 (c) 0.1184 (d) 0.01184
40. 40.6.7 × 0.6 — where does the decimal point go? (a) 4.02 (b) 0.0402 (c) 0.402 (d) 40.2

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