Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 853 · 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.₹55.15 + ₹45.40 =
2. 2.1% of 330 =
3. 3.393 − 56 =
4. 4.69² =
5. 5.30 × 4 =
6. 6.Best estimate of 38 × 38? (a) 3200 (b) 160 (c) 16000 (d) 1600
7. 7.38 × 15 =
8. 8.₹24.40 − ₹11.85 =
9. 9.₹22.20 − ₹18.80 =
10. 10.331 + 49 =
11. 11.Check with nines: 38 × 77 = 2929. Correct or wrong? (a) wrong (b) correct
12. 12.260 ÷ 5 =
13. 13.21 × 8 =
14. 14.257 − 29 =
15. 15.₹52.30 + ₹15.35 =
16. 16.17 + 19 + 66 + 36 =
17. 17.178 − 58 =
18. 18.67 × 4 =
19. 19.53 × 50 =
20. 20.66 × 50 =
21. 21.320 + 79 =
22. 22.Check with nines: 866 + 203 = 1069. Correct or wrong? (a) wrong (b) correct
23. 23.128 − 47 =
24. 24.497 + 47 =
25. 25.31 × 4 =
26. 26.Check with nines: 45 × 79 = 3557. Correct or wrong? (a) wrong (b) correct
27. 27.4 + 4 + 8 + 6 =
28. 28.28 × 5 =
29. 29.6 + 6 + 4 + 4 =
30. 30.Best estimate of 79 × 39? (a) 32000 (b) 3200 (c) 6400 (d) 320
31. 31.13 × 17 =
32. 32.15 × 5 =
33. 33.36 × 4 =
34. 34.25 × 50 =
35. 35.527 − 57 =
36. 36.Check with nines: 85 × 48 = 4080. Correct or wrong? (a) wrong (b) correct
37. 37.50% of 450 =
38. 38.81² =
39. 39.1350 ÷ 25 =
40. 40.1% of 650 =

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