Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 146 · 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. 1.75 × 8 =
2. 2.50% of 650 =
3. 3.242 − 99 =
4. 4.Best estimate of 59 × 89? (a) 540 (b) 10800 (c) 54000 (d) 5400
5. 5.20% of 170 =
6. 6.Best estimate of 98 × 4? (a) 400 (b) 40 (c) 4000 (d) 800
7. 7.₹34.70 − ₹15.30 =
8. 8.71² =
9. 9.141 + 27 =
10. 10.52 × 8 =
11. 11.17 × 16 =
12. 12.10% of 810 =
13. 13.10% of 770 =
14. 14.6 + 3 + 8 + 2 + 3 =
15. 15.19 × 50 =
16. 16.₹76.65 + ₹5.25 =
17. 17.379 − 96 =
18. 18.Check with nines: 364 + 851 = 1216. Correct or wrong? (a) wrong (b) correct
19. 19.₹40.85 + ₹12.05 =
20. 20.Check with nines: 17 × 90 = 1531. Correct or wrong? (a) correct (b) wrong
21. 21.9 + 2 + 9 + 1 + 9 =
22. 22.Best estimate of 19 × 62? (a) 2400 (b) 120 (c) 1200 (d) 12000
23. 23.15% of 730 =
24. 24.31² =
25. 25.15 × 5 =
26. 26.₹5.50 + ₹39.55 =
27. 27.101 + 97 =
28. 28.41 × 4 =
29. 29.29 × 15 =
30. 30.70 × 4 =
31. 31.₹33.95 + ₹9.30 =
32. 32.94 × 50 =
33. 33.₹62.15 + ₹13.50 =
34. 34.109 × 4 =
35. 35.215 − 18 =
36. 36.Best estimate of 399 × 5? (a) 20000 (b) 4000 (c) 200 (d) 2000
37. 37.15 × 19 =
38. 38.₹81.40 + ₹2.30 =
39. 39.81² =
40. 40.11 × 15 =

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