Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 724 · 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. 1.61² =
2. 2.62 × 8 =
3. 3.Best estimate of 98 × 6? (a) 60 (b) 6000 (c) 600 (d) 1200
4. 4.₹30.25 + ₹18.45 =
5. 5.7 + 1 + 4 + 8 + 9 =
6. 6.17 + 11 + 52 + 77 =
7. 7.Best estimate of 52 × 28? (a) 3000 (b) 1500 (c) 15000 (d) 150
8. 8.20% of 820 =
9. 9.79² =
10. 10.50% of 500 =
11. 11.3 + 1 + 8 + 8 + 7 =
12. 12.₹72.60 − ₹17.25 =
13. 13.143 − 76 =
14. 14.62 × 15 =
15. 15.18 + 72 + 46 + 44 =
16. 16.50% of 380 =
17. 17.₹76.80 + ₹5.05 =
18. 18.12 × 15 =
19. 19.5 × 15 =
20. 20.19 × 13 =
21. 21.18 × 17 =
22. 22.460 ÷ 5 =
23. 23.41 × 15 =
24. 24.330 + 89 =
25. 25.Check with nines: 63 × 84 = 5299. Correct or wrong? (a) wrong (b) correct
26. 26.34 × 15 =
27. 27.Check with nines: 20 × 21 = 412. Correct or wrong? (a) correct (b) wrong
28. 28.24 × 4 =
29. 29.480 + 88 =
30. 30.Check with nines: 726 + 362 = 1088. Correct or wrong? (a) wrong (b) correct
31. 31.₹56.10 − ₹40.30 =
32. 32.1025 ÷ 25 =
33. 33.1 + 3 + 9 + 1 =
34. 34.₹76.60 + ₹32.55 =
35. 35.51² =
36. 36.581 − 19 =
37. 37.6 + 2 + 8 + 3 + 3 =
38. 38.2 + 8 + 4 + 8 =
39. 39.750 ÷ 25 =
40. 40.27 × 8 =

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