Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 197 · 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. 1.351 − 66 =
2. 2.₹44.35 − ₹11.40 =
3. 3.Check with nines: 127 + 860 = 993. Correct or wrong? (a) correct (b) wrong
4. 4.221 − 76 =
5. 5.44 + 17 =
6. 6.855 ÷ 5 =
7. 7.64 × 15 =
8. 8.₹95.45 − ₹4.45 =
9. 9.16 × 15 =
10. 10.20% of 620 =
11. 11.Best estimate of 303 × 7? (a) 21000 (b) 210 (c) 4200 (d) 2100
12. 12.₹10.95 − ₹9.35 =
13. 13.Check with nines: 62 × 51 = 3162. Correct or wrong? (a) correct (b) wrong
14. 14.147 × 4 =
15. 15.50% of 820 =
16. 16.7 + 2 + 8 + 3 =
17. 17.Best estimate of 91 × 88? (a) 16200 (b) 810 (c) 8100 (d) 81000
18. 18.16 × 8 =
19. 19.3 + 9 + 3 + 9 + 1 =
20. 20.79² =
21. 21.20% of 150 =
22. 22.15 × 15 =
23. 23.20% of 380 =
24. 24.82 × 50 =
25. 25.4 + 3 + 7 + 1 =
26. 26.1150 ÷ 50 =
27. 27.Best estimate of 38 × 39? (a) 3200 (b) 1600 (c) 16000 (d) 160
28. 28.179 − 86 =
29. 29.29 × 5 =
30. 30.64 × 4 =
31. 31.140 + 39 =
32. 32.Best estimate of 78 × 62? (a) 480 (b) 4800 (c) 48000 (d) 9600
33. 33.14 × 19 =
34. 34.160 + 99 =
35. 35.314 − 66 =
36. 36.7 + 6 + 2 + 1 + 4 =
37. 37.7 + 3 + 2 + 6 + 4 =
38. 38.308 + 69 =
39. 39.6 + 3 + 3 + 3 + 7 =
40. 40.422 − 17 =

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