Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 371 · 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. 1.1 + 4 + 6 + 4 =
2. 2.28 × 4 =
3. 3.Best estimate of 598 × 8? (a) 9600 (b) 4800 (c) 480 (d) 48000
4. 4.24 × 50 =
5. 5.50% of 850 =
6. 6.1% of 20 =
7. 7.22 × 5 =
8. 8.4 + 3 + 8 + 7 =
9. 9.Best estimate of 102 × 5? (a) 5000 (b) 50 (c) 500 (d) 1000
10. 10.129 × 4 =
11. 11.19² =
12. 12.362 − 87 =
13. 13.23 + 18 + 50 + 72 =
14. 14.153 × 4 =
15. 15.5% of 470 =
16. 16.Check with nines: 920 + 579 = 1497. Correct or wrong? (a) wrong (b) correct
17. 17.377 + 37 =
18. 18.45 × 50 =
19. 19.18 × 11 =
20. 20.83 × 50 =
21. 21.1 + 9 + 6 + 7 + 4 =
22. 22.366 − 58 =
23. 23.₹81.65 + ₹2.60 =
24. 24.22 + 66 + 44 + 34 =
25. 25.79² =
26. 26.16 + 16 + 67 + 40 =
27. 27.₹57.70 + ₹14.85 =
28. 28.91² =
29. 29.₹42.35 + ₹6.40 =
30. 30.21 × 8 =
31. 31.₹54.30 − ₹34.90 =
32. 32.31 × 8 =
33. 33.92 × 50 =
34. 34.₹15.30 + ₹17.70 =
35. 35.Check with nines: 53 × 67 = 3549. Correct or wrong? (a) correct (b) wrong
36. 36.77 × 5 =
37. 37.Check with nines: 61 × 51 = 3111. Correct or wrong? (a) correct (b) wrong
38. 38.925 ÷ 25 =
39. 39.13 × 12 =
40. 40.2 + 9 + 6 + 1 =

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