Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 381 · 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. 1.57 + 19 =
2. 2.4 + 9 + 6 + 2 + 6 =
3. 3.13 × 14 =
4. 4.4 + 1 + 2 + 8 =
5. 5.Best estimate of 597 × 4? (a) 24000 (b) 4800 (c) 2400 (d) 240
6. 6.88 + 74 + 86 + 63 =
7. 7.825 ÷ 25 =
8. 8.Check with nines: 48 × 79 = 3792. Correct or wrong? (a) wrong (b) correct
9. 9.444 + 29 =
10. 10.21² =
11. 11.20% of 150 =
12. 12.₹16.75 + ₹28.25 =
13. 13.₹46.05 + ₹2.15 =
14. 14.₹58.80 + ₹43.65 =
15. 15.13 × 50 =
16. 16.15 × 15 =
17. 17.41 × 50 =
18. 18.225 + 77 =
19. 19.39 + 80 + 72 + 62 =
20. 20.86 × 5 =
21. 21.Check with nines: 92 × 49 = 4501. Correct or wrong? (a) correct (b) wrong
22. 22.12 × 15 =
23. 23.311 − 28 =
24. 24.22 + 13 + 23 + 37 =
25. 25.18 × 19 =
26. 26.Best estimate of 91 × 71? (a) 12600 (b) 63000 (c) 6300 (d) 630
27. 27.Best estimate of 702 × 7? (a) 49000 (b) 4900 (c) 490 (d) 9800
28. 28.56 × 15 =
29. 29.Check with nines: 29 × 89 = 2576. Correct or wrong? (a) wrong (b) correct
30. 30.25% of 480 =
31. 31.1 + 2 + 6 + 8 =
32. 32.16 × 13 =
33. 33.5 + 1 + 1 + 9 =
34. 34.227 − 17 =
35. 35.21² =
36. 36.13 × 50 =
37. 37.Best estimate of 798 × 7? (a) 11200 (b) 560 (c) 5600 (d) 56000
38. 38.393 − 68 =
39. 39.176 − 89 =
40. 40.25 × 8 =

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