Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 573 · 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. 1.1325 ÷ 25 =
2. 2.44 × 8 =
3. 3.Check with nines: 365 + 749 = 1120. Correct or wrong? (a) wrong (b) correct
4. 4.280 − 77 =
5. 5.243 + 78 =
6. 6.31 × 8 =
7. 7.32 + 45 + 26 + 13 =
8. 8.26 × 15 =
9. 9.15 + 82 + 47 + 24 =
10. 10.390 + 29 =
11. 11.1% of 240 =
12. 12.20 + 79 + 29 + 32 =
13. 13.Best estimate of 298 × 6? (a) 3600 (b) 18000 (c) 180 (d) 1800
14. 14.10% of 150 =
15. 15.₹79.45 + ₹17.75 =
16. 16.16 × 11 =
17. 17.Best estimate of 71 × 18? (a) 1400 (b) 14000 (c) 2800 (d) 140
18. 18.19 × 15 =
19. 19.50% of 350 =
20. 20.₹58.40 − ₹19.45 =
21. 21.523 − 78 =
22. 22.37 × 15 =
23. 23.16 × 13 =
24. 24.42 × 15 =
25. 25.80 × 50 =
26. 26.₹38.70 − ₹7.30 =
27. 27.₹14.30 + ₹23.70 =
28. 28.269 + 87 =
29. 29.44 × 4 =
30. 30.50% of 890 =
31. 31.₹49.95 − ₹19.70 =
32. 32.78 × 50 =
33. 33.15 × 12 =
34. 34.Best estimate of 39 × 31? (a) 120 (b) 12000 (c) 2400 (d) 1200
35. 35.Best estimate of 903 × 3? (a) 270 (b) 5400 (c) 27000 (d) 2700
36. 36.345 − 67 =
37. 37.108 × 4 =
38. 38.75 + 63 + 70 + 88 =
39. 39.₹39.95 − ₹32.25 =
40. 40.Best estimate of 28 × 41? (a) 2400 (b) 120 (c) 12000 (d) 1200

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