Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 22 · 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. 1.800 ÷ 50 =
2. 2.1000 ÷ 50 =
3. 3.51² =
4. 4.33 × 15 =
5. 5.443 − 68 =
6. 6.91 × 5 =
7. 7.39 × 15 =
8. 8.5 + 9 + 1 + 2 =
9. 9.16 × 18 =
10. 10.50 × 15 =
11. 11.11 × 19 =
12. 12.6 + 6 + 2 + 4 + 3 =
13. 13.28 × 5 =
14. 14.33 + 25 + 14 + 59 =
15. 15.69² =
16. 16.₹17.95 + ₹45.50 =
17. 17.47 × 15 =
18. 18.17 × 19 =
19. 19.Check with nines: 812 + 184 = 1004. Correct or wrong? (a) wrong (b) correct
20. 20.₹11.95 + ₹18.55 =
21. 21.77 + 58 + 70 + 67 =
22. 22.59² =
23. 23.88 × 5 =
24. 24.₹7.20 + ₹32.25 =
25. 25.15 × 13 =
26. 26.316 + 99 =
27. 27.15 + 73 + 17 + 49 =
28. 28.6 + 4 + 4 + 2 =
29. 29.117 × 4 =
30. 30.Best estimate of 31 × 71? (a) 21000 (b) 4200 (c) 210 (d) 2100
31. 31.19 × 17 =
32. 32.Best estimate of 697 × 8? (a) 56000 (b) 560 (c) 11200 (d) 5600
33. 33.18 + 62 + 71 + 80 =
34. 34.Best estimate of 401 × 6? (a) 4800 (b) 2400 (c) 240 (d) 24000
35. 35.5 + 3 + 6 + 5 =
36. 36.13 × 8 =
37. 37.7 + 2 + 4 + 3 + 2 =
38. 38.Check with nines: 63 × 12 = 756. Correct or wrong? (a) correct (b) wrong
39. 39.₹28.15 − ₹18.90 =
40. 40.60 × 5 =

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