Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 593 · 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. 1.72 + 57 + 25 + 79 =
2. 2.1450 ÷ 50 =
3. 3.Best estimate of 802 × 8? (a) 6400 (b) 12800 (c) 640 (d) 64000
4. 4.40 × 8 =
5. 5.43 × 15 =
6. 6.96 + 68 =
7. 7.387 + 78 =
8. 8.463 + 87 =
9. 9.20% of 390 =
10. 10.Best estimate of 38 × 18? (a) 80 (b) 1600 (c) 800 (d) 8000
11. 11.Best estimate of 697 × 8? (a) 56000 (b) 560 (c) 11200 (d) 5600
12. 12.177 − 96 =
13. 13.67 + 46 + 17 + 64 =
14. 14.Best estimate of 497 × 3? (a) 150 (b) 1500 (c) 15000 (d) 3000
15. 15.40 × 15 =
16. 16.103 + 87 =
17. 17.46 × 50 =
18. 18.₹5.40 + ₹40.90 =
19. 19.277 − 87 =
20. 20.25% of 870 =
21. 21.5 + 5 + 6 + 6 + 5 =
22. 22.20% of 60 =
23. 23.Best estimate of 72 × 61? (a) 4200 (b) 8400 (c) 42000 (d) 420
24. 24.16 × 5 =
25. 25.85 + 35 + 45 + 85 =
26. 26.11 × 15 =
27. 27.246 − 46 =
28. 28.56 + 27 =
29. 29.49 × 15 =
30. 30.18 × 8 =
31. 31.49² =
32. 32.Best estimate of 49 × 18? (a) 100 (b) 10000 (c) 1000 (d) 2000
33. 33.24 + 54 + 11 + 56 =
34. 34.31 × 15 =
35. 35.2 + 5 + 7 + 5 + 3 =
36. 36.3 + 6 + 7 + 6 + 1 =
37. 37.50% of 630 =
38. 38.20% of 890 =
39. 39.361 − 97 =
40. 40.525 − 96 =

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