Mental Maths Questions Worksheet for Class 5
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.
NameDateTime takenScore ___ / 40
- 1.34 + ? = 100
- 2.Double 36 =
- 3.62 + 9 =
- 4.Best estimate of 60 × 27? (a) 1800 (b) 180 (c) 18000
- 5.51 × 6 =
- 6.83 − 77 =
- 7.Half of 102 =
- 8.202 − 196 =
- 9.A film starts at 4:35 and ends at 7:40. How many minutes long is the film?
- 10.123 − 98 =
- 11.729 ÷ 9 =
- 12.369 ÷ 9 =
- 13.Half of 46 =
- 14.A train leaves at 6:50 and reaches the next city at 7:50. How many minutes is the journey?
- 15.438 ÷ 6 =
- 16.21 + 20 =
- 17.556 − 99 =
- 18.11 + 10 =
- 19.5% of ₹620 =
- 20.33 laddoos are packed in boxes of 4. How many laddoos are left over?
- 21.637 ÷ 7 =
- 22.25 + 26 =
- 23.144 ÷ 8 =
- 24.81 + 83 =
- 25.You buy a water bottle for ₹33 and pay with a ₹100 note. How much change do you get, in rupees?
- 26.12 + 11 =
- 27.2 + ? = 10
- 28.25 − 19 =
- 29.A cricket match starts at 7:15 and the first innings ends at 7:55. How many minutes did the innings last?
- 30.819 ÷ 9 =
- 31.29² =
- 32.92 children stand in rows of 7. How many full rows can they make?
- 33.Best estimate of 807 + 529? (a) 1300 (b) 1100 (c) 1500
- 34.5 + ? = 10
- 35.15 − 9 =
- 36.128 ÷ 8 =
- 37.19 + 6 =
- 38.41 − 29 =
- 39.105 − 72 =
- 40.50% of ₹650 =
Answer key
- 66
- 72
- 71
- 1800
- 306
- 6
- 51
- 6
- 185
- 25
- 81
- 41
- 23
- 60
- 73
- 41
- 457
- 21
- 31
- 1
- 91
- 51
- 18
- 164
- 67
- 23
- 8
- 6
- 40
- 91
- 841
- 13
- 1300
- 5
- 6
- 16
- 25
- 12
- 33
- 325
Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths