Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 96 · 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. 1.138 × 4 =
2. 2.6 + 1 + 9 + 4 =
3. 3.5 + 8 + 2 + 8 + 9 =
4. 4.315 + 39 =
5. 5.83 − 77 =
6. 6.18 × 8 =
7. 7.16 × 8 =
8. 8.Check with nines: 809 + 595 = 1404. Correct or wrong? (a) wrong (b) correct
9. 9.2 + 4 + 9 + 6 =
10. 10.71² =
11. 11.Best estimate of 28 × 68? (a) 2100 (b) 21000 (c) 210 (d) 4200
12. 12.59² =
13. 13.53 × 8 =
14. 14.17 + 65 + 66 + 51 =
15. 15.61² =
16. 16.17 × 5 =
17. 17.Best estimate of 102 × 7? (a) 7000 (b) 1400 (c) 70 (d) 700
18. 18.16 × 15 =
19. 19.₹67.30 + ₹10.45 =
20. 20.53 × 8 =
21. 21.17 × 16 =
22. 22.25% of 360 =
23. 23.21 × 4 =
24. 24.31² =
25. 25.20% of 90 =
26. 26.314 − 28 =
27. 27.3 + 5 + 3 + 5 =
28. 28.61² =
29. 29.50% of 900 =
30. 30.23 + 76 + 71 + 41 =
31. 31.75 × 8 =
32. 32.19 × 11 =
33. 33.219 − 28 =
34. 34.19² =
35. 35.81² =
36. 36.10% of 740 =
37. 37.₹46.70 − ₹17.80 =
38. 38.39² =
39. 39.56 × 15 =
40. 40.Check with nines: 52 × 13 = 676. Correct or wrong? (a) wrong (b) correct

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