Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 933 · 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. 1.50 × 8 =
2. 2.156 × 4 =
3. 3.25% of 340 =
4. 4.14 × 18 =
5. 5.7 + 5 + 8 + 2 + 8 =
6. 6.50 × 8 =
7. 7.91² =
8. 8.33 × 15 =
9. 9.61 × 15 =
10. 10.29² =
11. 11.₹18.60 + ₹44.05 =
12. 12.37 + 33 + 78 + 50 =
13. 13.14 × 15 =
14. 14.59² =
15. 15.316 + 78 =
16. 16.294 + 17 =
17. 17.1% of 830 =
18. 18.74 × 4 =
19. 19.4 + 1 + 7 + 9 =
20. 20.₹89.10 − ₹8.20 =
21. 21.₹74.75 − ₹27.30 =
22. 22.Best estimate of 29 × 89? (a) 5400 (b) 2700 (c) 270 (d) 27000
23. 23.58 × 15 =
24. 24.Best estimate of 52 × 69? (a) 350 (b) 35000 (c) 3500 (d) 7000
25. 25.569 − 17 =
26. 26.89² =
27. 27.8 × 15 =
28. 28.Check with nines: 710 + 347 = 1052. Correct or wrong? (a) correct (b) wrong
29. 29.22 × 15 =
30. 30.₹26.90 + ₹36.90 =
31. 31.Best estimate of 52 × 48? (a) 25000 (b) 250 (c) 2500 (d) 5000
32. 32.1600 ÷ 50 =
33. 33.Check with nines: 36 × 94 = 3384. Correct or wrong? (a) correct (b) wrong
34. 34.Best estimate of 702 × 6? (a) 8400 (b) 420 (c) 4200 (d) 42000
35. 35.Best estimate of 69 × 72? (a) 490 (b) 49000 (c) 4900 (d) 9800
36. 36.446 − 28 =
37. 37.Check with nines: 763 + 806 = 1569. Correct or wrong? (a) wrong (b) correct
38. 38.12 × 15 =
39. 39.49² =
40. 40.39² =

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