The factors of a number are 1, 2, 4, 5, 8, 10, 16, 20, 40 and 80. What is the number?

If the number 6354 * 97 is divisible by 9, then the value * is

The HCF of two numbers is 2 and their LCM is 154. If the difference between the numbers is 8, then the sum is

Which is the greatest? 0.007 g, 70 mg, 0.07 cg

2 days = ____________ hours.

3 weeks = ___________ days

There is no profit or loss when

Discount = M.P. - _____________

An equilateral triangle is

Which of the following is not possible?

If the LCM of 3 and 9 is 9, then their HCF is _______________

The least number that should be added to 57 so that the sum is exactly divisible by 2, 3, 4 and 5 is ______________

20 l – 1 l 500 ml = _________l _________ml

In an isosceles triangle ______________ angles are equal.

The sum of three angles of a triangle is ___________.

Every natural number is either prime or composite

The HCF of two numbers is always a factor of their LCM

Pugazhenthi ate 100 g of nuts which is equal to 0.1 kg.

Meena bought 250 ml of buttermilk which is equal to 2.5 l.

Karkuzhali's bag 1kg 250g and Poongkodi's bag 2kg 750g. The total weight of their bags 4kg

Find the prime factorisation of each number by factor tree method and division method. 
a) 60 
b) 128 
c) 144 
d) 198 
e) 420 
f) 999

The LCM of two numbers is 6 times their HCF. If the HCF is 12 and one of the numbers is 36, then find the other number.

The sum of three prime numbers is 80. The difference of two of them is 4. Find the numbers.

A flag pole is 5 m 35 cm long. What is the length of the flag pole in cm?

The saplings are planted at a distance of 2 m 50 cm in the road of length 5 km by saravanan. If he has 2560 saplings, how many saplings will be planted by him? how many saplings are left?

A squirrel wants to eat the grains quickly. Help the Squirrel to find the shortest way to reach the grains. (Use your scale to measure length of the line segments)

A man bought 75 Mangoes for Rs. 300 and sold 50 Mangoes for Rs. 300. If he sold all the mangoes at the same price, find his profit or loss.

A store purchased pens at Rs. 216 per dozen. He paid Rs. 58 for conveyance and sold the pens at the discount of Rs. 2 per pen and made a overall profit of Rs. 50. Find the M.P. of each pen.

An electrician buys a used T.V. for Rs. 12,000 and a used Fridge for Rs. 11,000. After spending Rs. 1000 on repairing the T.V. and Rs. 1500 on painting the Fridge, he fixes up the M.P. of T.V. as Rs. 15,000 and that of Fridge as Rs. 15,500. If he gives Rs. 1000 discount on each find his profit or loss.

Draw a line segment AB of length 6 cm. At each end of this line segment AB, draw a line perpendicular to the line AB. Are these lines parallel?

Is a triangle possible with the angles 90°, 90° and 0°? Why?

Which of the following statements is true? Why?
(a) Every equilateral triangle is an isosceles triangle.
(b) Every isosceles triangle is an equilateral triangle.

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.

Convert into lower units: 
(i) 15 km (m, cm, mm)
(ii) 12 kg (g, mg)

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 7 cm, 10 cm and 5 cm as its sides?

Convert '5a' into Tree diagram

Find the LCM of 156 and 124.

Complete the following table.

A football team gains 3 and 4 points for successive 2 days and loses 5 points on the third day. Find the total points scored by the team and also represent this in tree diagram.