Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 616 · 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. 1.25 + 61 + 35 + 14 =
2. 2.Check with nines: 44 × 51 = 2244. Correct or wrong? (a) wrong (b) correct
3. 3.₹61.10 + ₹27.80 =
4. 4.131 + 48 =
5. 5.130 × 4 =
6. 6.61² =
7. 7.397 − 29 =
8. 8.12 × 17 =
9. 9.295 + 18 =
10. 10.Best estimate of 31 × 22? (a) 1200 (b) 60 (c) 6000 (d) 600
11. 11.31 × 15 =
12. 12.9 + 1 + 7 + 1 =
13. 13.1% of 590 =
14. 14.53 + 97 =
15. 15.243 + 39 =
16. 16.Best estimate of 52 × 58? (a) 30000 (b) 6000 (c) 300 (d) 3000
17. 17.9 + 5 + 9 + 1 =
18. 18.16 + 54 + 25 + 60 =
19. 19.₹24.90 − ₹11.70 =
20. 20.82 + 79 + 55 + 54 =
21. 21.6 + 2 + 4 + 1 + 6 =
22. 22.50% of 170 =
23. 23.Best estimate of 501 × 3? (a) 150 (b) 3000 (c) 15000 (d) 1500
24. 24.35 × 50 =
25. 25.Check with nines: 82 × 87 = 7133. Correct or wrong? (a) correct (b) wrong
26. 26.20 × 8 =
27. 27.73 × 50 =
28. 28.24 + 52 + 15 + 50 =
29. 29.41² =
30. 30.398 + 78 =
31. 31.81 + 67 =
32. 32.51² =
33. 33.32 × 8 =
34. 34.36 × 50 =
35. 35.81² =
36. 36.1 + 6 + 2 + 9 + 9 =
37. 37.86 + 13 + 76 + 78 =
38. 38.₹43.95 − ₹31.40 =
39. 39.448 + 57 =
40. 40.10% of 710 =

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