Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 889 · 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. 1.10% of 570 =
2. 2.50% of 40 =
3. 3.12 × 5 =
4. 4.Check with nines: 511 + 394 = 900. Correct or wrong? (a) wrong (b) correct
5. 5.19 × 50 =
6. 6.44 + 26 + 41 + 61 =
7. 7.52 + 35 + 31 + 24 =
8. 8.8 + 2 + 6 + 7 =
9. 9.₹36.70 + ₹42.75 =
10. 10.250 ÷ 50 =
11. 11.650 ÷ 50 =
12. 12.581 − 46 =
13. 13.53 + 25 + 86 + 46 =
14. 14.494 + 18 =
15. 15.54 + 79 + 84 + 26 =
16. 16.15 × 13 =
17. 17.1 + 4 + 7 + 6 =
18. 18.20 × 8 =
19. 19.135 − 17 =
20. 20.Check with nines: 659 + 669 = 1328. Correct or wrong? (a) wrong (b) correct
21. 21.74 × 5 =
22. 22.49² =
23. 23.64 × 50 =
24. 24.35 + 81 + 77 + 30 =
25. 25.₹37.15 − ₹32.50 =
26. 26.Best estimate of 91 × 18? (a) 3600 (b) 18000 (c) 180 (d) 1800
27. 27.Best estimate of 498 × 9? (a) 450 (b) 4500 (c) 45000 (d) 9000
28. 28.18 × 13 =
29. 29.₹18.85 + ₹4.95 =
30. 30.Check with nines: 289 + 347 = 636. Correct or wrong? (a) correct (b) wrong
31. 31.3 + 3 + 7 + 7 =
32. 32.50% of 900 =
33. 33.193 − 56 =
34. 34.73 × 4 =
35. 35.Best estimate of 71 × 29? (a) 4200 (b) 210 (c) 21000 (d) 2100
36. 36.500 ÷ 5 =
37. 37.62 × 8 =
38. 38.195 ÷ 5 =
39. 39.91 + 37 =
40. 40.3 + 3 + 2 + 1 + 7 =

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