Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 393 · 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. 1.39² =
2. 2.Best estimate of 797 × 7? (a) 560 (b) 56000 (c) 5600 (d) 11200
3. 3.11 × 18 =
4. 4.15 × 11 =
5. 5.18 × 5 =
6. 6.55 × 15 =
7. 7.66 × 50 =
8. 8.9 + 5 + 1 + 3 + 9 =
9. 9.18 × 15 =
10. 10.Best estimate of 68 × 21? (a) 14000 (b) 140 (c) 1400 (d) 2800
11. 11.11 × 19 =
12. 12.202 − 77 =
13. 13.25% of 390 =
14. 14.158 − 37 =
15. 15.67 + 88 =
16. 16.1475 ÷ 25 =
17. 17.1100 ÷ 25 =
18. 18.35 × 50 =
19. 19.81 + 32 + 30 + 23 =
20. 20.1% of 900 =
21. 21.5% of 730 =
22. 22.Best estimate of 801 × 6? (a) 9600 (b) 480 (c) 48000 (d) 4800
23. 23.Check with nines: 939 + 755 = 1694. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 368 + 437 = 804. Correct or wrong? (a) correct (b) wrong
25. 25.15 × 12 =
26. 26.186 − 59 =
27. 27.10% of 140 =
28. 28.9 + 4 + 9 + 4 + 1 =
29. 29.46 × 8 =
30. 30.₹29.10 + ₹11.55 =
31. 31.₹72.30 − ₹18.25 =
32. 32.8 + 3 + 3 + 7 =
33. 33.Check with nines: 57 × 41 = 2331. Correct or wrong? (a) correct (b) wrong
34. 34.5 + 2 + 3 + 7 =
35. 35.255 − 26 =
36. 36.301 − 66 =
37. 37.Check with nines: 16 × 27 = 431. Correct or wrong? (a) wrong (b) correct
38. 38.309 + 38 =
39. 39.5% of 190 =
40. 40.271 + 17 =

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