Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 622 · 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. 1.43 × 15 =
2. 2.₹84.20 − ₹4.75 =
3. 3.Check with nines: 597 + 337 = 934. Correct or wrong? (a) correct (b) wrong
4. 4.72 + 64 + 52 + 87 =
5. 5.34 + 63 + 48 + 68 =
6. 6.Best estimate of 197 × 7? (a) 2800 (b) 14000 (c) 1400 (d) 140
7. 7.287 − 66 =
8. 8.79² =
9. 9.₹75.90 + ₹32.15 =
10. 10.₹35.60 − ₹32.95 =
11. 11.Check with nines: 488 + 463 = 951. Correct or wrong? (a) correct (b) wrong
12. 12.14 × 15 =
13. 13.Best estimate of 92 × 82? (a) 72000 (b) 7200 (c) 14400 (d) 720
14. 14.51² =
15. 15.462 − 89 =
16. 16.24 + 54 + 75 + 70 =
17. 17.3 + 9 + 7 + 3 =
18. 18.Best estimate of 402 × 4? (a) 16000 (b) 1600 (c) 160 (d) 3200
19. 19.5% of 220 =
20. 20.59² =
21. 21.374 − 58 =
22. 22.1 + 5 + 2 + 5 + 5 =
23. 23.474 + 28 =
24. 24.Check with nines: 125 + 682 = 807. Correct or wrong? (a) correct (b) wrong
25. 25.10% of 20 =
26. 26.32 + 25 + 39 + 77 =
27. 27.35 × 4 =
28. 28.Best estimate of 31 × 91? (a) 270 (b) 2700 (c) 27000 (d) 5400
29. 29.60 − 29 =
30. 30.41² =
31. 31.40 + 53 + 19 + 22 =
32. 32.156 − 37 =
33. 33.77 × 50 =
34. 34.₹71.25 − ₹43.75 =
35. 35.154 − 68 =
36. 36.12 × 13 =
37. 37.7 + 3 + 2 + 3 + 7 =
38. 38.₹58.55 + ₹23.30 =
39. 39.12 × 16 =
40. 40.66 + 28 =

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