Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 254 · 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. 1.8.8 × 1.3 — where does the decimal point go? (a) 11.44 (b) 1.144 (c) 114.4 (d) 0.1144
2. 2.7.7 × 6 — where does the decimal point go? (a) 4.62 (b) 0.462 (c) 46.2 (d) 462
3. 3.4.8 × 0.6 — where does the decimal point go? (a) 28.8 (b) 0.0288 (c) 2.88 (d) 0.288
4. 4.8.7 × 7 — where does the decimal point go? (a) 6.09 (b) 60.9 (c) 0.609 (d) 609
5. 5.5.7 × 0.3 — where does the decimal point go? (a) 1.71 (b) 17.1 (c) 0.0171 (d) 0.171
6. 6.9.4 × 0.6 — where does the decimal point go? (a) 0.0564 (b) 56.4 (c) 0.564 (d) 5.64
7. 7.2.6 × 26 — where does the decimal point go? (a) 6.76 (b) 676 (c) 0.676 (d) 67.6
8. 8.0.58 × 0.8 — where does the decimal point go? (a) 0.464 (b) 4.64 (c) 0.0464 (d) 0.00464
9. 9.8.8 × 1.1 — where does the decimal point go? (a) 0.0968 (b) 9.68 (c) 0.968 (d) 96.8
10. 10.0.76 × 1.2 — where does the decimal point go? (a) 9.12 (b) 0.912 (c) 0.0912 (d) 0.00912
11. 11.0.23 × 4.6 — where does the decimal point go? (a) 1.058 (b) 0.01058 (c) 10.58 (d) 0.1058
12. 12.8.4 × 29 — where does the decimal point go? (a) 243.6 (b) 24.36 (c) 2436 (d) 2.436
13. 13.0.33 × 3.6 — where does the decimal point go? (a) 0.01188 (b) 0.1188 (c) 11.88 (d) 1.188
14. 14.8.6 × 4 — where does the decimal point go? (a) 344 (b) 3.44 (c) 0.344 (d) 34.4
15. 15.0.18 × 3.1 — where does the decimal point go? (a) 0.558 (b) 5.58 (c) 0.0558 (d) 0.00558
16. 16.0.68 × 3 — where does the decimal point go? (a) 2.04 (b) 0.0204 (c) 0.204 (d) 20.4
17. 17.7.1 × 45 — where does the decimal point go? (a) 3.195 (b) 319.5 (c) 3195 (d) 31.95
18. 18.3.1 × 2.9 — where does the decimal point go? (a) 0.0899 (b) 89.9 (c) 8.99 (d) 0.899
19. 19.0.53 × 38 — where does the decimal point go? (a) 2.014 (b) 20.14 (c) 201.4 (d) 0.2014
20. 20.5.7 × 4.4 — where does the decimal point go? (a) 0.2508 (b) 25.08 (c) 2.508 (d) 250.8
21. 21.9.3 × 0.5 — where does the decimal point go? (a) 4.65 (b) 46.5 (c) 0.0465 (d) 0.465
22. 22.3.4 × 0.7 — where does the decimal point go? (a) 2.38 (b) 0.0238 (c) 0.238 (d) 23.8
23. 23.8.6 × 0.3 — where does the decimal point go? (a) 0.258 (b) 25.8 (c) 0.0258 (d) 2.58
24. 24.5.3 × 6 — where does the decimal point go? (a) 0.318 (b) 3.18 (c) 318 (d) 31.8
25. 25.0.47 × 14 — where does the decimal point go? (a) 65.8 (b) 6.58 (c) 0.0658 (d) 0.658
26. 26.5.1 × 3.4 — where does the decimal point go? (a) 17.34 (b) 173.4 (c) 0.1734 (d) 1.734
27. 27.0.26 × 17 — where does the decimal point go? (a) 4.42 (b) 44.2 (c) 0.0442 (d) 0.442
28. 28.4.4 × 0.6 — where does the decimal point go? (a) 26.4 (b) 2.64 (c) 0.264 (d) 0.0264
29. 29.0.33 × 0.4 — where does the decimal point go? (a) 1.32 (b) 0.132 (c) 0.0132 (d) 0.00132
30. 30.5.6 × 48 — where does the decimal point go? (a) 2.688 (b) 26.88 (c) 268.8 (d) 2688
31. 31.8.3 × 1.6 — where does the decimal point go? (a) 13.28 (b) 132.8 (c) 0.1328 (d) 1.328
32. 32.0.72 × 0.3 — where does the decimal point go? (a) 0.216 (b) 2.16 (c) 0.00216 (d) 0.0216
33. 33.0.58 × 1.6 — where does the decimal point go? (a) 9.28 (b) 0.928 (c) 0.00928 (d) 0.0928
34. 34.4.2 × 22 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.924 (d) 924
35. 35.0.93 × 9 — where does the decimal point go? (a) 0.837 (b) 0.0837 (c) 83.7 (d) 8.37
36. 36.9.7 × 0.3 — where does the decimal point go? (a) 2.91 (b) 0.291 (c) 29.1 (d) 0.0291
37. 37.4.6 × 6 — where does the decimal point go? (a) 2.76 (b) 27.6 (c) 0.276 (d) 276
38. 38.0.83 × 43 — where does the decimal point go? (a) 0.3569 (b) 356.9 (c) 3.569 (d) 35.69
39. 39.8.4 × 6 — where does the decimal point go? (a) 5.04 (b) 504 (c) 0.504 (d) 50.4
40. 40.0.45 × 9 — where does the decimal point go? (a) 40.5 (b) 4.05 (c) 0.405 (d) 0.0405

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