Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 498 · 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. 1.94 × 50 =
2. 2.50% of 420 =
3. 3.169 + 28 =
4. 4.94 × 50 =
5. 5.Best estimate of 28 × 79? (a) 2400 (b) 24000 (c) 240 (d) 4800
6. 6.₹50.50 + ₹24.85 =
7. 7.Check with nines: 580 + 554 = 1134. Correct or wrong? (a) wrong (b) correct
8. 8.599 − 28 =
9. 9.14 × 11 =
10. 10.755 ÷ 5 =
11. 11.82 − 36 =
12. 12.120 − 27 =
13. 13.24 × 50 =
14. 14.₹46.45 − ₹41.70 =
15. 15.20% of 510 =
16. 16.1 + 4 + 3 + 7 + 9 =
17. 17.57 − 49 =
18. 18.138 × 4 =
19. 19.81 + 78 + 86 + 45 =
20. 20.14 × 18 =
21. 21.₹56.80 + ₹44.75 =
22. 22.29² =
23. 23.237 + 47 =
24. 24.25% of 270 =
25. 25.79² =
26. 26.9 + 4 + 2 + 8 =
27. 27.53 × 5 =
28. 28.391 − 67 =
29. 29.39 × 5 =
30. 30.25% of 100 =
31. 31.32 × 15 =
32. 32.269 − 96 =
33. 33.Check with nines: 96 × 27 = 2592. Correct or wrong? (a) correct (b) wrong
34. 34.9 + 6 + 1 + 8 =
35. 35.₹20.55 + ₹41.25 =
36. 36.Best estimate of 38 × 29? (a) 120 (b) 2400 (c) 12000 (d) 1200
37. 37.61 × 4 =
38. 38.₹34.30 − ₹8.10 =
39. 39.308 − 16 =
40. 40.Best estimate of 698 × 4? (a) 28000 (b) 280 (c) 5600 (d) 2800

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