Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 485 · 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. 1.58 × 4 =
2. 2.7 + 4 + 6 + 8 + 2 =
3. 3.Check with nines: 57 × 51 = 2907. Correct or wrong? (a) wrong (b) correct
4. 4.471 − 48 =
5. 5.81 + 11 + 55 + 48 =
6. 6.100 + 29 =
7. 7.419 + 27 =
8. 8.12 × 15 =
9. 9.62 + 22 + 22 + 46 =
10. 10.122 − 28 =
11. 11.Check with nines: 78 × 33 = 2574. Correct or wrong? (a) correct (b) wrong
12. 12.47 × 15 =
13. 13.149 + 97 =
14. 14.1425 ÷ 25 =
15. 15.25% of 600 =
16. 16.114 + 99 =
17. 17.7 + 8 + 3 + 4 =
18. 18.₹56.55 − ₹44.10 =
19. 19.15 × 5 =
20. 20.Check with nines: 45 × 59 = 2647. Correct or wrong? (a) wrong (b) correct
21. 21.₹51.25 − ₹33.75 =
22. 22.66 × 4 =
23. 23.402 + 38 =
24. 24.75 + 53 + 49 + 22 =
25. 25.16 × 17 =
26. 26.81² =
27. 27.Check with nines: 528 + 942 = 1470. Correct or wrong? (a) correct (b) wrong
28. 28.11 × 13 =
29. 29.Check with nines: 62 × 66 = 4092. Correct or wrong? (a) correct (b) wrong
30. 30.14 × 5 =
31. 31.350 ÷ 50 =
32. 32.87 × 5 =
33. 33.8 + 6 + 4 + 2 =
34. 34.Check with nines: 74 × 13 = 962. Correct or wrong? (a) correct (b) wrong
35. 35.5 + 3 + 5 + 2 + 9 =
36. 36.439 − 76 =
37. 37.8 + 8 + 6 + 2 =
38. 38.7 + 5 + 4 + 6 =
39. 39.89 + 15 + 33 + 30 =
40. 40.₹73.80 + ₹3.85 =

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