Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 631 · 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. 1.0.61 × 0.4 — where does the decimal point go? (a) 0.0244 (b) 2.44 (c) 0.244 (d) 0.00244
2. 2.7.1 × 4.7 — where does the decimal point go? (a) 3.337 (b) 33.37 (c) 0.3337 (d) 333.7
3. 3.2.1 × 3 — where does the decimal point go? (a) 0.063 (b) 0.63 (c) 6.3 (d) 63
4. 4.5.9 × 7 — where does the decimal point go? (a) 0.413 (b) 413 (c) 41.3 (d) 4.13
5. 5.3.1 × 0.5 — where does the decimal point go? (a) 15.5 (b) 0.155 (c) 0.0155 (d) 1.55
6. 6.0.89 × 0.4 — where does the decimal point go? (a) 0.356 (b) 0.0356 (c) 0.00356 (d) 3.56
7. 7.0.85 × 0.5 — where does the decimal point go? (a) 0.425 (b) 4.25 (c) 0.0425 (d) 0.00425
8. 8.0.41 × 2.3 — where does the decimal point go? (a) 0.943 (b) 0.00943 (c) 9.43 (d) 0.0943
9. 9.0.78 × 26 — where does the decimal point go? (a) 2.028 (b) 20.28 (c) 202.8 (d) 0.2028
10. 10.0.53 × 26 — where does the decimal point go? (a) 13.78 (b) 1.378 (c) 137.8 (d) 0.1378
11. 11.4.2 × 1.8 — where does the decimal point go? (a) 7.56 (b) 0.756 (c) 0.0756 (d) 75.6
12. 12.8.3 × 1.2 — where does the decimal point go? (a) 9.96 (b) 99.6 (c) 0.0996 (d) 0.996
13. 13.0.68 × 0.6 — where does the decimal point go? (a) 4.08 (b) 0.0408 (c) 0.00408 (d) 0.408
14. 14.4.3 × 0.7 — where does the decimal point go? (a) 0.301 (b) 3.01 (c) 0.0301 (d) 30.1
15. 15.0.59 × 0.5 — where does the decimal point go? (a) 0.295 (b) 0.0295 (c) 0.00295 (d) 2.95
16. 16.0.39 × 8 — where does the decimal point go? (a) 3.12 (b) 31.2 (c) 0.312 (d) 0.0312
17. 17.7.1 × 1.3 — where does the decimal point go? (a) 0.0923 (b) 9.23 (c) 92.3 (d) 0.923
18. 18.3.8 × 0.8 — where does the decimal point go? (a) 0.304 (b) 3.04 (c) 30.4 (d) 0.0304
19. 19.0.96 × 23 — where does the decimal point go? (a) 2.208 (b) 22.08 (c) 0.2208 (d) 220.8
20. 20.9.6 × 23 — where does the decimal point go? (a) 220.8 (b) 2.208 (c) 2208 (d) 22.08
21. 21.0.43 × 5 — where does the decimal point go? (a) 2.15 (b) 0.215 (c) 0.0215 (d) 21.5
22. 22.8.3 × 2 — where does the decimal point go? (a) 1.66 (b) 16.6 (c) 0.166 (d) 166
23. 23.0.88 × 17 — where does the decimal point go? (a) 1.496 (b) 0.1496 (c) 14.96 (d) 149.6
24. 24.4.3 × 15 — where does the decimal point go? (a) 64.5 (b) 6.45 (c) 0.645 (d) 645
25. 25.9.7 × 19 — where does the decimal point go? (a) 184.3 (b) 1843 (c) 1.843 (d) 18.43
26. 26.7.9 × 44 — where does the decimal point go? (a) 34.76 (b) 3476 (c) 347.6 (d) 3.476
27. 27.0.35 × 21 — where does the decimal point go? (a) 7.35 (b) 0.735 (c) 0.0735 (d) 73.5
28. 28.7.6 × 0.7 — where does the decimal point go? (a) 0.532 (b) 53.2 (c) 5.32 (d) 0.0532
29. 29.0.87 × 2 — where does the decimal point go? (a) 0.174 (b) 17.4 (c) 0.0174 (d) 1.74
30. 30.9.6 × 1.6 — where does the decimal point go? (a) 1.536 (b) 0.1536 (c) 15.36 (d) 153.6
31. 31.0.73 × 0.6 — where does the decimal point go? (a) 0.438 (b) 0.00438 (c) 4.38 (d) 0.0438
32. 32.0.77 × 6 — where does the decimal point go? (a) 0.462 (b) 46.2 (c) 0.0462 (d) 4.62
33. 33.0.14 × 3.4 — where does the decimal point go? (a) 0.0476 (b) 0.00476 (c) 4.76 (d) 0.476
34. 34.0.77 × 3 — where does the decimal point go? (a) 2.31 (b) 23.1 (c) 0.231 (d) 0.0231
35. 35.3.5 × 1.1 — where does the decimal point go? (a) 0.385 (b) 3.85 (c) 0.0385 (d) 38.5
36. 36.0.73 × 42 — where does the decimal point go? (a) 306.6 (b) 30.66 (c) 3.066 (d) 0.3066
37. 37.0.67 × 42 — where does the decimal point go? (a) 2.814 (b) 0.2814 (c) 281.4 (d) 28.14
38. 38.4.6 × 4 — where does the decimal point go? (a) 18.4 (b) 0.184 (c) 184 (d) 1.84
39. 39.0.99 × 0.8 — where does the decimal point go? (a) 7.92 (b) 0.792 (c) 0.0792 (d) 0.00792
40. 40.6.7 × 9 — where does the decimal point go? (a) 6.03 (b) 603 (c) 0.603 (d) 60.3

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