Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 449 · 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. 1.37 × 50 =
2. 2.Check with nines: 78 × 51 = 3978. Correct or wrong? (a) wrong (b) correct
3. 3.12 × 15 =
4. 4.47 × 15 =
5. 5.5% of 770 =
6. 6.7 + 9 + 4 + 3 + 1 =
7. 7.₹39.70 − ₹39.65 =
8. 8.Check with nines: 53 × 82 = 4346. Correct or wrong? (a) wrong (b) correct
9. 9.8 + 1 + 5 + 2 + 7 =
10. 10.18 + 80 + 85 + 27 =
11. 11.78 − 47 =
12. 12.38 + 68 + 24 + 30 =
13. 13.5% of 330 =
14. 14.79 × 5 =
15. 15.Check with nines: 48 × 24 = 1152. Correct or wrong? (a) wrong (b) correct
16. 16.60 − 57 =
17. 17.1275 ÷ 25 =
18. 18.138 × 4 =
19. 19.31 + 33 + 65 + 31 =
20. 20.79 + 48 + 50 + 89 =
21. 21.29² =
22. 22.185 + 38 =
23. 23.39² =
24. 24.₹28.10 + ₹28.20 =
25. 25.Best estimate of 103 × 9? (a) 90 (b) 900 (c) 1800 (d) 9000
26. 26.12 + 82 + 71 + 77 =
27. 27.Best estimate of 101 × 3? (a) 3000 (b) 600 (c) 30 (d) 300
28. 28.Best estimate of 41 × 81? (a) 6400 (b) 32000 (c) 320 (d) 3200
29. 29.₹37.05 + ₹29.65 =
30. 30.69 + 78 =
31. 31.825 ÷ 25 =
32. 32.Best estimate of 798 × 5? (a) 400 (b) 8000 (c) 4000 (d) 40000
33. 33.Best estimate of 398 × 9? (a) 360 (b) 7200 (c) 3600 (d) 36000
34. 34.68 + 23 + 23 + 62 =
35. 35.₹49.65 − ₹16.90 =
36. 36.30 × 15 =
37. 37.15 × 11 =
38. 38.128 − 26 =
39. 39.22 + 54 + 31 + 68 =
40. 40.Check with nines: 41 × 40 = 1640. Correct or wrong? (a) correct (b) wrong

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