Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 548 · 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. 1.370 − 98 =
2. 2.Check with nines: 83 × 68 = 5640. Correct or wrong? (a) correct (b) wrong
3. 3.26 × 15 =
4. 4.Best estimate of 18 × 58? (a) 12000 (b) 2400 (c) 120 (d) 1200
5. 5.Check with nines: 315 + 982 = 1297. Correct or wrong? (a) wrong (b) correct
6. 6.9 + 2 + 1 + 4 + 7 =
7. 7.31 + 39 + 55 + 38 =
8. 8.13 × 14 =
9. 9.16 × 50 =
10. 10.3 + 7 + 7 + 9 + 1 =
11. 11.41² =
12. 12.75 × 50 =
13. 13.₹29.15 + ₹31.15 =
14. 14.111 + 68 =
15. 15.61 × 15 =
16. 16.66 × 50 =
17. 17.451 − 76 =
18. 18.655 ÷ 5 =
19. 19.257 − 49 =
20. 20.92 × 5 =
21. 21.23 + 73 + 57 + 81 =
22. 22.75 × 50 =
23. 23.Best estimate of 699 × 3? (a) 210 (b) 2100 (c) 4200 (d) 21000
24. 24.81² =
25. 25.15% of 260 =
26. 26.4 + 3 + 6 + 6 + 1 =
27. 27.₹18.25 + ₹27.30 =
28. 28.379 − 26 =
29. 29.21² =
30. 30.21² =
31. 31.Check with nines: 447 + 546 = 993. Correct or wrong? (a) wrong (b) correct
32. 32.20 × 5 =
33. 33.14 × 11 =
34. 34.77 × 5 =
35. 35.435 + 58 =
36. 36.41² =
37. 37.50% of 620 =
38. 38.₹83.40 − ₹3.50 =
39. 39.481 − 66 =
40. 40.22 + 85 + 23 + 51 =

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