Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 76 · 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. 1.5% of 900 =
2. 2.Best estimate of 798 × 8? (a) 640 (b) 64000 (c) 6400 (d) 12800
3. 3.250 ÷ 5 =
4. 4.328 + 67 =
5. 5.122 − 59 =
6. 6.62 × 15 =
7. 7.13 × 17 =
8. 8.79 × 50 =
9. 9.Best estimate of 88 × 79? (a) 7200 (b) 14400 (c) 72000 (d) 720
10. 10.7 × 15 =
11. 11.59 × 8 =
12. 12.42 × 4 =
13. 13.4 + 6 + 9 + 8 =
14. 14.490 − 19 =
15. 15.452 − 56 =
16. 16.9 + 9 + 9 + 1 =
17. 17.58 × 8 =
18. 18.₹39.75 − ₹31.05 =
19. 19.15 × 13 =
20. 20.6 + 9 + 1 + 5 =
21. 21.Best estimate of 31 × 69? (a) 2100 (b) 4200 (c) 210 (d) 21000
22. 22.Check with nines: 737 + 911 = 1648. Correct or wrong? (a) wrong (b) correct
23. 23.61 + 52 + 15 + 60 =
24. 24.11 × 14 =
25. 25.8 + 5 + 9 + 2 + 6 =
26. 26.89² =
27. 27.55 × 8 =
28. 28.1 + 9 + 5 + 5 + 1 =
29. 29.36 × 4 =
30. 30.Check with nines: 978 + 707 = 1685. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 18 × 36 = 648. Correct or wrong? (a) wrong (b) correct
32. 32.6 + 6 + 1 + 4 + 2 =
33. 33.131 + 58 =
34. 34.Check with nines: 369 + 797 = 1168. Correct or wrong? (a) correct (b) wrong
35. 35.580 − 58 =
36. 36.449 − 39 =
37. 37.10% of 780 =
38. 38.23 × 8 =
39. 39.15 × 50 =
40. 40.48 × 15 =

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