Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 138 · 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.What is the remainder when 74 is divided by 7?
2. 2.1008 − 986 =
3. 3.Best estimate of 642 + 560? (a) 1400 (b) 1200 (c) 1000
4. 4.29² =
5. 5.93 − 74 =
6. 6.57 − 31 =
7. 7.75 × 9 =
8. 8.510 − 488 =
9. 9.5% of ₹770 =
10. 10.Best estimate of 616 + 772? (a) 1400 (b) 1600 (c) 1200
11. 11.Double 48 =
12. 12.17² =
13. 13.86 laddoos are packed in boxes of 8. How many laddoos are left over?
14. 14.37 × 8 =
15. 15.28 laddoos are packed in boxes of 3. How many laddoos are left over?
16. 16.82 − 46 =
17. 17.11 + 10 =
18. 18.82 + ? = 100
19. 19.115 ÷ 5 =
20. 20.71 × 4 =
21. 21.Half of 72 =
22. 22.A train leaves at 3:40 and reaches the next city at 5:25. How many minutes is the journey?
23. 23.20 × 8 =
24. 24.69 + 9 =
25. 25.208 ÷ 4 =
26. 26.83 + ? = 100
27. 27.You buy a bag of mangoes for ₹61 and pay with a ₹100 note. How much change do you get, in rupees?
28. 28.You buy a kite for ₹54 and pay with a ₹100 note. How much change do you get, in rupees?
29. 29.52 − 17 =
30. 30.318 ÷ 6 =
31. 31.212 ÷ 4 =
32. 32.Half of 148 =
33. 33.50% of ₹130 =
34. 34.A cricket match starts at 4:55 and the first innings ends at 5:45. How many minutes did the innings last?
35. 35.Double 31 =
36. 36.26 × 3 =
37. 37.69 + 8 =
38. 38.You buy a kite for ₹139 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.497 ÷ 7 =
40. 40.21 × 8 =

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