Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 629 · 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. 1.89² =
2. 2.18 × 19 =
3. 3.57 + 68 + 55 + 11 =
4. 4.89² =
5. 5.1 + 1 + 2 + 1 + 9 =
6. 6.63 × 5 =
7. 7.15 + 55 + 14 + 36 =
8. 8.Best estimate of 41 × 62? (a) 24000 (b) 4800 (c) 2400 (d) 240
9. 9.362 + 79 =
10. 10.Best estimate of 81 × 62? (a) 9600 (b) 4800 (c) 480 (d) 48000
11. 11.13 × 15 =
12. 12.₹21.70 − ₹19.45 =
13. 13.Check with nines: 75 × 67 = 5031. Correct or wrong? (a) correct (b) wrong
14. 14.₹25.90 − ₹11.35 =
15. 15.66 × 8 =
16. 16.18 × 8 =
17. 17.₹22.45 + ₹31.30 =
18. 18.41² =
19. 19.₹41.90 + ₹2.10 =
20. 20.Check with nines: 352 + 709 = 1061. Correct or wrong? (a) correct (b) wrong
21. 21.126 + 39 =
22. 22.7 + 6 + 8 + 3 =
23. 23.17 × 17 =
24. 24.4 + 1 + 9 + 4 =
25. 25.84 × 5 =
26. 26.32 × 8 =
27. 27.42 + 46 + 58 + 43 =
28. 28.Check with nines: 656 + 182 = 844. Correct or wrong? (a) correct (b) wrong
29. 29.490 ÷ 5 =
30. 30.₹53.25 + ₹12.35 =
31. 31.25% of 630 =
32. 32.49 + 46 + 49 + 13 =
33. 33.15 × 18 =
34. 34.₹16.70 + ₹3.90 =
35. 35.51 × 15 =
36. 36.Check with nines: 76 × 35 = 2660. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 36 × 27 = 972. Correct or wrong? (a) wrong (b) correct
38. 38.Best estimate of 103 × 6? (a) 600 (b) 1200 (c) 60 (d) 6000
39. 39.12 × 18 =
40. 40.29 × 15 =

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