Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 847 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.88 + 8 =
2. 2.46 + 6 =
3. 3.70 − 43 =
4. 4.You buy a notebook for ₹428 and pay with a ₹500 note. How much change do you get, in rupees?
5. 5.1017 − 991 =
6. 6.120 ÷ 5 =
7. 7.70 − 19 =
8. 8.15 + 6 =
9. 9.37 × 8 =
10. 10.A cricket match starts at 5:40 and the first innings ends at 6:45. How many minutes did the innings last?
11. 11.84 ÷ 4 =
12. 12.25% of ₹430 =
13. 13.5% of ₹410 =
14. 14.744 ÷ 8 =
15. 15.507 − 475 =
16. 16.73 − 18 =
17. 17.288 ÷ 8 =
18. 18.Best estimate of 39 × 71? (a) 28000 (b) 2800 (c) 280
19. 19.31 × 8 =
20. 20.81 − 9 =
21. 21.55 − 9 =
22. 22.5 + ? = 10
23. 23.36 × 6 =
24. 24.327 − 298 =
25. 25.28 + ? = 100
26. 26.Double 39 =
27. 27.10% of ₹210 =
28. 28.106 − 76 =
29. 29.You buy a kite for ₹79 and pay with a ₹100 note. How much change do you get, in rupees?
30. 30.You buy a box of crayons for ₹293 and pay with a ₹500 note. How much change do you get, in rupees?
31. 31.27 + 28 =
32. 32.Best estimate of 97 × 90? (a) 90000 (b) 9000 (c) 900
33. 33.43 × 4 =
34. 34.47 − 29 =
35. 35.98 − 51 =
36. 36.61 + 73 =
37. 37.46 + 67 =
38. 38.184 ÷ 4 =
39. 39.26 × 8 =
40. 40.67 + 4 =

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