Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 590 · 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 41 × 49? (a) 2000 (b) 4000 (c) 200 (d) 20000
2. 2.424 + 99 =
3. 3.18 × 19 =
4. 4.15 × 13 =
5. 5.18 × 18 =
6. 6.5 + 9 + 3 + 5 + 7 =
7. 7.88 − 79 =
8. 8.18 × 5 =
9. 9.19² =
10. 10.27 + 36 + 14 + 22 =
11. 11.Check with nines: 83 × 34 = 2819. Correct or wrong? (a) wrong (b) correct
12. 12.65 + 69 + 59 + 24 =
13. 13.11 + 51 + 20 + 69 =
14. 14.Check with nines: 80 × 73 = 5840. Correct or wrong? (a) correct (b) wrong
15. 15.1250 ÷ 25 =
16. 16.44 × 8 =
17. 17.400 ÷ 50 =
18. 18.9 + 7 + 3 + 3 + 8 =
19. 19.49 + 13 + 32 + 49 =
20. 20.330 + 88 =
21. 21.Best estimate of 18 × 41? (a) 8000 (b) 800 (c) 1600 (d) 80
22. 22.35 + 68 + 71 + 61 =
23. 23.61² =
24. 24.43 × 15 =
25. 25.29² =
26. 26.₹97.90 + ₹20.70 =
27. 27.1% of 730 =
28. 28.9 + 3 + 1 + 7 + 2 =
29. 29.130 × 4 =
30. 30.51² =
31. 31.15 × 8 =
32. 32.314 + 97 =
33. 33.Best estimate of 79 × 38? (a) 320 (b) 32000 (c) 6400 (d) 3200
34. 34.63 + 15 + 69 + 13 =
35. 35.Check with nines: 92 × 64 = 5890. Correct or wrong? (a) wrong (b) correct
36. 36.59 + 57 =
37. 37.32 + 19 + 13 + 26 =
38. 38.15 × 15 =
39. 39.3 + 3 + 5 + 8 + 5 =
40. 40.Check with nines: 75 × 67 = 5025. Correct or wrong? (a) wrong (b) correct

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