Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 786 · 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. 1.400 ÷ 50 =
2. 2.79 + 27 + 22 + 12 =
3. 3.10% of 780 =
4. 4.3 + 9 + 1 + 8 + 1 =
5. 5.Check with nines: 91 × 32 = 2912. Correct or wrong? (a) wrong (b) correct
6. 6.5% of 720 =
7. 7.78 × 50 =
8. 8.79² =
9. 9.20 × 15 =
10. 10.19 × 16 =
11. 11.Check with nines: 67 × 89 = 5963. Correct or wrong? (a) correct (b) wrong
12. 12.35 + 88 + 58 + 21 =
13. 13.15% of 290 =
14. 14.69² =
15. 15.₹15.75 − ₹6.15 =
16. 16.Check with nines: 85 × 59 = 5022. Correct or wrong? (a) correct (b) wrong
17. 17.57 × 15 =
18. 18.23 × 8 =
19. 19.41² =
20. 20.29 × 8 =
21. 21.72 × 8 =
22. 22.45 + 16 + 66 + 59 =
23. 23.10 × 15 =
24. 24.Check with nines: 58 × 88 = 5106. Correct or wrong? (a) wrong (b) correct
25. 25.8 + 5 + 6 + 5 =
26. 26.12 + 83 + 45 + 63 =
27. 27.530 − 17 =
28. 28.32 × 15 =
29. 29.145 + 69 =
30. 30.11 × 14 =
31. 31.125 ÷ 25 =
32. 32.Best estimate of 299 × 4? (a) 12000 (b) 2400 (c) 1200 (d) 120
33. 33.₹42.80 − ₹36.55 =
34. 34.4 + 5 + 6 + 6 + 2 =
35. 35.Best estimate of 62 × 29? (a) 180 (b) 3600 (c) 18000 (d) 1800
36. 36.₹88.35 − ₹44.35 =
37. 37.1 + 5 + 9 + 8 + 4 =
38. 38.Best estimate of 18 × 41? (a) 800 (b) 8000 (c) 80 (d) 1600
39. 39.16 × 18 =
40. 40.74 × 5 =

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