Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 537 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.Best estimate of 42 × 62? (a) 240 (b) 24000 (c) 4800 (d) 2400
2. 2.Best estimate of 702 × 9? (a) 630 (b) 63000 (c) 12600 (d) 6300
3. 3.2 + 1 + 8 + 3 =
4. 4.178 + 28 =
5. 5.5% of 590 =
6. 6.15% of 580 =
7. 7.Best estimate of 699 × 3? (a) 4200 (b) 21000 (c) 210 (d) 2100
8. 8.Best estimate of 82 × 79? (a) 12800 (b) 6400 (c) 640 (d) 64000
9. 9.Check with nines: 77 × 18 = 1386. Correct or wrong? (a) correct (b) wrong
10. 10.46 × 50 =
11. 11.80 − 78 =
12. 12.₹30.70 + ₹14.05 =
13. 13.212 + 17 =
14. 14.291 − 46 =
15. 15.43 × 5 =
16. 16.5% of 620 =
17. 17.88 × 4 =
18. 18.91 × 50 =
19. 19.7 + 3 + 4 + 6 + 1 =
20. 20.62 + 48 + 77 + 14 =
21. 21.₹10.80 + ₹5.10 =
22. 22.₹31.45 − ₹23.90 =
23. 23.6 + 9 + 1 + 3 + 1 =
24. 24.11 × 16 =
25. 25.49 × 15 =
26. 26.88 + 14 + 75 + 83 =
27. 27.50% of 390 =
28. 28.51² =
29. 29.23 + 30 + 11 + 14 =
30. 30.1 + 6 + 6 + 4 + 5 =
31. 31.Best estimate of 61 × 92? (a) 5400 (b) 540 (c) 10800 (d) 54000
32. 32.18 × 15 =
33. 33.Check with nines: 849 + 432 = 1281. Correct or wrong? (a) wrong (b) correct
34. 34.14 × 14 =
35. 35.260 − 96 =
36. 36.14 + 55 + 78 + 66 =
37. 37.20% of 20 =
38. 38.36 + 70 + 75 + 45 =
39. 39.13 × 11 =
40. 40.37 × 15 =

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