Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 608 · 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. 1.14 × 50 =
2. 2.353 + 49 =
3. 3.84 + 33 + 60 + 88 =
4. 4.25% of 140 =
5. 5.81 + 66 + 36 + 42 =
6. 6.11 × 17 =
7. 7.680 ÷ 5 =
8. 8.45 + 47 + 24 + 27 =
9. 9.57 × 8 =
10. 10.389 + 77 =
11. 11.₹75.35 + ₹42.30 =
12. 12.75 × 8 =
13. 13.35 + 76 + 81 + 64 =
14. 14.15 × 15 =
15. 15.498 + 39 =
16. 16.Check with nines: 877 + 977 = 1847. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 47 × 84 = 3943. Correct or wrong? (a) correct (b) wrong
18. 18.4 × 15 =
19. 19.17 × 11 =
20. 20.20 × 15 =
21. 21.Check with nines: 606 + 695 = 1301. Correct or wrong? (a) wrong (b) correct
22. 22.Best estimate of 52 × 61? (a) 30000 (b) 300 (c) 3000 (d) 6000
23. 23.Check with nines: 43 × 84 = 3612. Correct or wrong? (a) wrong (b) correct
24. 24.236 − 69 =
25. 25.12 × 15 =
26. 26.15 × 12 =
27. 27.122 + 89 =
28. 28.Check with nines: 52 × 21 = 1092. Correct or wrong? (a) wrong (b) correct
29. 29.137 − 48 =
30. 30.43 × 50 =
31. 31.20% of 840 =
32. 32.Best estimate of 58 × 82? (a) 4800 (b) 9600 (c) 480 (d) 48000
33. 33.60 × 50 =
34. 34.45 + 18 =
35. 35.₹72.15 − ₹42.75 =
36. 36.₹42.95 − ₹27.65 =
37. 37.120 + 67 =
38. 38.98 × 4 =
39. 39.80 − 46 =
40. 40.₹31.65 + ₹34.80 =

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