Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 818 · 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. 1.13 × 13 =
2. 2.3 + 8 + 2 + 7 =
3. 3.₹74.25 + ₹8.10 =
4. 4.324 + 58 =
5. 5.₹93.40 + ₹16.05 =
6. 6.Check with nines: 52 × 26 = 1348. Correct or wrong? (a) correct (b) wrong
7. 7.81 × 5 =
8. 8.₹28.85 + ₹15.25 =
9. 9.43 × 4 =
10. 10.Check with nines: 95 × 83 = 7888. Correct or wrong? (a) wrong (b) correct
11. 11.27 × 50 =
12. 12.₹39.50 − ₹7.10 =
13. 13.15% of 840 =
14. 14.₹59.30 − ₹40.70 =
15. 15.56 × 8 =
16. 16.29 × 50 =
17. 17.143 + 87 =
18. 18.Best estimate of 89 × 41? (a) 36000 (b) 360 (c) 7200 (d) 3600
19. 19.202 + 68 =
20. 20.79² =
21. 21.Best estimate of 88 × 88? (a) 81000 (b) 16200 (c) 8100 (d) 810
22. 22.1000 ÷ 25 =
23. 23.Best estimate of 32 × 19? (a) 6000 (b) 60 (c) 1200 (d) 600
24. 24.386 + 58 =
25. 25.144 + 67 =
26. 26.740 ÷ 5 =
27. 27.20% of 330 =
28. 28.20 × 50 =
29. 29.92 × 5 =
30. 30.1150 ÷ 50 =
31. 31.Best estimate of 497 × 6? (a) 30000 (b) 300 (c) 3000 (d) 6000
32. 32.41 + 28 =
33. 33.Best estimate of 61 × 61? (a) 7200 (b) 3600 (c) 360 (d) 36000
34. 34.950 ÷ 50 =
35. 35.10% of 200 =
36. 36.Best estimate of 88 × 18? (a) 3600 (b) 180 (c) 1800 (d) 18000
37. 37.48 × 5 =
38. 38.10% of 190 =
39. 39.30 + 14 + 74 + 60 =
40. 40.104 − 96 =

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