A book seller has 175 English books, 245 Science books and 385 Mathematics books. He wants to sell the books in a box, subject-wise in equal numbers. What will be the greatest number of the boxes required? Also find the number of books for each subject in a box.

Find the smallest number that can be divided by 254 and 508 which leaves the remainder 4.

The LCM of two numbers is 432 and their HCF is 36. If one of the numbers is 108, then find the other number.

Find A as required:
(i) The greatest 2 digit number 9A is divisible by 2.
(ii) The least number 567A is divisible by 3.
(iii) The greatest 3 digit number 9A6 is divisible by 6.
(iv) The number A08 is divisible by 4 and 9.
(v) The number 225A85 is divisible by 11.

The sum of any two successive odd numbers is always divisible by 4. Justify this statement with an example

Convert into higher units :
(i) 13000 mm (km, m, cm)
(ii) 8257 ml (kl, l)

Thenmozhi’s height is 1.25 m now. She grows 5 cm every year. What would be her height after 6 years?

In a school, 200 litres of lemon juice is prepared. If 250 ml lemon juice is given to each student, how many students get the juice?

A farmer ploughed the paddy field for 3 hours 35 minutes. How many minutes did he plough?

Mala's date of birth is 20-11-1999. What is her age on 05-10-2018?

Convert the following:
(i) 20 minutes into seconds
(ii) 5 hours 35 minutes 40 seconds into seconds
(iii) 3 ½ hours into minutes
(iv) 580 minutes into hours
(v) 25200 seconds into hours

Fill up the appropriate boxes in the following table.

	C.P. in Rs	S.P. in Rs	Profit in Rs	Loss in Rs
(i)	100	120
(ii)	110	120
(iii)	120		20
(iv)	100	90
(v)	120		25

Muthu has a car worth Rs. 8,50,000 and he wants to sell it at a profit of Rs. 25,000. What should be the selling price of the car?

Can a triangle be formed with the angles 80°, 30°, 40°?

Draw a line segment LM = 6.5 cm and take a point P not lying on it. Using a set square construct a line perpendicular to LM through P.

In the flower exhibition conducted at Ooty for 4 days the number of tickets sold on the first, second, third and fourth days are 1,10,010; 75,070; 25,720 and 30,636 respectively. Find the total number of tickets sold.

Vani and Kala along with three other friends went to a butter milk shop. The cost of one butter milk is Rs. 6. If 9 more friends joined them, then how much money did they have to pay? Vani said they had to pay Rs. 84 whereas Kala said they had to pay Rs. 59. Who is correct?

Convert into a Tree diagram (9\(\times\)5) + (10\(\times\)12)

Convert into a Tree diagram {[(10 \(\times\) 5)+6]\(\times\)[5+(6−2)]}\(\div \)[8\(\times\)(4+2)].

Convert the tree diagram into numerical expression.

Convert the Tree diagram into a numerical expression.

Convert '5a' into Tree diagram

Convert the following numerical expressions into Tree diagrams.
(i) 8 + (6 \(\times\) 2)
(ii) 9 − (2 \(\times\) 3)
(iii) (3 \(\times\) 5) − (4 \(\div \) 2)
(iv) [(2 \(\times\) 4)+2] \(\times\) (8 \(\div \) 2)
(v) [(6 +4) \(\times\) 7] \(\div \) [2 \(\times\) (10 −5)]
(vi) [(4 \(\times\) 3) \(\div \) 2] + [8 \(\times\) (5 − 3)]

Write the missing numbers in the trees.

Check whether the Tree diagrams are equal or not.