A challenge for my amazing mathematicians

 Try as many of these as you can, and let me know how you get on.

1.  John had 2 and a half cakes, his friends ate 1 and a quarter  of the cake, how much of the cake is left?

2.  A train covers 20m in a second, what is the speed of train in km per hr

3.  Make the greatest and the smallest 4-digit numbers with digits 9,3,7,1

4.  One number is bigger than another number by 36. If sum of both numbers is 48, find the numbers

5.  Express 20 as percentage of 25

6.  Rohan slept at 9.30 pm and got up at 6.00am how much time did he sleep?

7.  The age of 5 children is 13,15 11,9 and 8 years, find their average age

8.  A container has 4.650ml of milk. How many glasses each of 250ml capacity can be poured out?

9.  The total age of three people adds up to 60 years, the ages are in proportion 1:2:3 what are their ages?

10.             The side of a square room is 12m find the cost of carpeting the floor at the rate of $5 per square metre

11.             What is 15% of 500

12.             The side of square is 25m what is the perimeter of the square?

13.             Find the sum of two numbers if one number is 41628, and the other number is 1235 greater than the first number

14.             Find 10% of 95

15.             Find the perimeter of rectangle of length 60cm and breadth 30cm

 

 

 

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