Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 729 · 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.Best estimate of 89 × 38? (a) 360 (b) 7200 (c) 36000 (d) 3600
2. 2.19 × 12 =
3. 3.24 + 48 + 54 + 52 =
4. 4.Check with nines: 761 + 483 = 1244. Correct or wrong? (a) wrong (b) correct
5. 5.9 + 1 + 9 + 9 + 2 =
6. 6.Check with nines: 87 × 30 = 2610. Correct or wrong? (a) wrong (b) correct
7. 7.₹67.55 + ₹7.65 =
8. 8.55 × 4 =
9. 9.42 × 4 =
10. 10.₹36.05 − ₹22.75 =
11. 11.₹15.25 + ₹26.20 =
12. 12.46 + 69 =
13. 13.28 × 50 =
14. 14.Check with nines: 35 × 72 = 2523. Correct or wrong? (a) wrong (b) correct
15. 15.Best estimate of 41 × 62? (a) 24000 (b) 4800 (c) 240 (d) 2400
16. 16.463 − 29 =
17. 17.Best estimate of 201 × 4? (a) 1600 (b) 800 (c) 8000 (d) 80
18. 18.41² =
19. 19.56 × 15 =
20. 20.Check with nines: 269 + 654 = 923. Correct or wrong? (a) wrong (b) correct
21. 21.Best estimate of 802 × 7? (a) 11200 (b) 56000 (c) 560 (d) 5600
22. 22.206 + 18 =
23. 23.Check with nines: 722 + 881 = 1603. Correct or wrong? (a) correct (b) wrong
24. 24.75 × 8 =
25. 25.Check with nines: 374 + 371 = 745. Correct or wrong? (a) correct (b) wrong
26. 26.14 × 15 =
27. 27.55 + 38 + 44 + 36 =
28. 28.146 × 4 =
29. 29.1325 ÷ 25 =
30. 30.380 ÷ 5 =
31. 31.5% of 830 =
32. 32.₹91.70 + ₹31.40 =
33. 33.Best estimate of 29 × 78? (a) 2400 (b) 240 (c) 4800 (d) 24000
34. 34.81² =
35. 35.₹15.35 − ₹7.50 =
36. 36.134 × 4 =
37. 37.₹70.55 − ₹16.20 =
38. 38.1% of 70 =
39. 39.Check with nines: 28 × 72 = 2010. Correct or wrong? (a) wrong (b) correct
40. 40.4 + 6 + 6 + 8 + 2 =

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