Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 130 · 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. 1.11 × 16 =
2. 2.₹33.85 + ₹46.85 =
3. 3.8 + 2 + 1 + 9 =
4. 4.1 + 9 + 1 + 9 + 8 =
5. 5.5 + 8 + 4 + 2 =
6. 6.31² =
7. 7.₹57.15 − ₹15.10 =
8. 8.14 × 17 =
9. 9.Check with nines: 57 × 87 = 4959. Correct or wrong? (a) wrong (b) correct
10. 10.55 × 15 =
11. 11.133 − 16 =
12. 12.Best estimate of 99 × 6? (a) 6000 (b) 1200 (c) 60 (d) 600
13. 13.6 + 9 + 2 + 8 + 1 =
14. 14.25 + 75 + 52 + 77 =
15. 15.Best estimate of 42 × 72? (a) 2800 (b) 5600 (c) 280 (d) 28000
16. 16.16 × 11 =
17. 17.57 × 4 =
18. 18.1350 ÷ 50 =
19. 19.440 + 97 =
20. 20.89 + 55 + 15 + 69 =
21. 21.Best estimate of 301 × 5? (a) 150 (b) 15000 (c) 1500 (d) 3000
22. 22.₹71.80 − ₹5.85 =
23. 23.17 + 18 + 53 + 67 =
24. 24.750 ÷ 5 =
25. 25.5 + 5 + 9 + 4 =
26. 26.116 + 49 =
27. 27.Check with nines: 26 × 85 = 2213. Correct or wrong? (a) correct (b) wrong
28. 28.36 + 34 + 72 + 17 =
29. 29.11 × 11 =
30. 30.41² =
31. 31.75 × 5 =
32. 32.300 ÷ 50 =
33. 33.17 × 4 =
34. 34.45 × 15 =
35. 35.15 × 15 =
36. 36.13 × 15 =
37. 37.15 × 5 =
38. 38.Check with nines: 67 × 27 = 1805. Correct or wrong? (a) correct (b) wrong
39. 39.Best estimate of 61 × 51? (a) 300 (b) 3000 (c) 6000 (d) 30000
40. 40.16 × 18 =

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