Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 445 · 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. 1.84 × 5 =
2. 2.450 ÷ 50 =
3. 3.₹34.75 − ₹33.35 =
4. 4.3 + 3 + 2 + 8 =
5. 5.765 ÷ 5 =
6. 6.4 + 4 + 6 + 3 + 6 =
7. 7.378 − 19 =
8. 8.100 ÷ 25 =
9. 9.61 × 50 =
10. 10.7 × 15 =
11. 11.54 × 5 =
12. 12.226 − 69 =
13. 13.Check with nines: 41 × 78 = 3198. Correct or wrong? (a) wrong (b) correct
14. 14.39² =
15. 15.Best estimate of 599 × 4? (a) 240 (b) 4800 (c) 2400 (d) 24000
16. 16.Check with nines: 27 × 79 = 2133. Correct or wrong? (a) wrong (b) correct
17. 17.296 + 69 =
18. 18.334 − 58 =
19. 19.134 + 59 =
20. 20.25% of 700 =
21. 21.31 × 50 =
22. 22.136 × 4 =
23. 23.3 + 8 + 2 + 6 =
24. 24.419 + 18 =
25. 25.410 − 56 =
26. 26.4 + 7 + 8 + 3 =
27. 27.Check with nines: 30 × 93 = 2798. Correct or wrong? (a) wrong (b) correct
28. 28.10% of 80 =
29. 29.9 × 15 =
30. 30.20% of 160 =
31. 31.13 × 50 =
32. 32.Check with nines: 70 × 21 = 1470. Correct or wrong? (a) correct (b) wrong
33. 33.10% of 140 =
34. 34.₹61.15 − ₹36.30 =
35. 35.20% of 150 =
36. 36.88 + 79 =
37. 37.9 + 7 + 3 + 2 =
38. 38.23 + 29 + 78 + 57 =
39. 39.121 − 76 =
40. 40.198 + 48 =

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