Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 509 · 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 31 × 61? (a) 3600 (b) 180 (c) 18000 (d) 1800
2. 2.43 + 70 + 24 + 31 =
3. 3.39² =
4. 4.358 + 18 =
5. 5.15 × 12 =
6. 6.209 + 27 =
7. 7.336 − 39 =
8. 8.20% of 250 =
9. 9.48 + 47 =
10. 10.₹50.10 − ₹30.85 =
11. 11.421 + 77 =
12. 12.Best estimate of 22 × 41? (a) 1600 (b) 80 (c) 8000 (d) 800
13. 13.291 + 29 =
14. 14.37 × 15 =
15. 15.10% of 890 =
16. 16.4 + 4 + 5 + 6 + 6 =
17. 17.28 × 8 =
18. 18.Check with nines: 47 × 83 = 3901. Correct or wrong? (a) wrong (b) correct
19. 19.51 × 15 =
20. 20.117 + 77 =
21. 21.Best estimate of 299 × 9? (a) 2700 (b) 270 (c) 5400 (d) 27000
22. 22.12 × 14 =
23. 23.29² =
24. 24.15 × 5 =
25. 25.Check with nines: 653 + 590 = 1243. Correct or wrong? (a) correct (b) wrong
26. 26.1 + 5 + 1 + 3 + 5 =
27. 27.558 − 17 =
28. 28.77 + 59 + 40 + 17 =
29. 29.16 × 5 =
30. 30.46 × 15 =
31. 31.112 − 78 =
32. 32.₹95.70 − ₹19.80 =
33. 33.Check with nines: 20 × 48 = 955. Correct or wrong? (a) correct (b) wrong
34. 34.413 + 48 =
35. 35.68 × 4 =
36. 36.870 ÷ 5 =
37. 37.108 − 96 =
38. 38.262 − 17 =
39. 39.₹48.65 − ₹29.20 =
40. 40.50 + 68 + 77 + 74 =

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