Question

1. Express 72 as product of prime factors. 2. Draw a factor tree of 272. 3. Shoba has 2 pieces of ribbon. One piece is 720 cm long and the other piece is 900 cm long. She wants to cut both these ribbon into strips of equal length that one as long as possible. How long should each strip be? 4. Find L.C.M of 75, 120, 200. 5. Find the least number which is divisible by 30, 50, 60 and 90. Chapter 8 – DECIMALS 1. Expand the number 18.514 2. Write as decimal numbers, (i) Forty-three and seven thousandths (ii) ninety point seven five six. 3. Arrange in ascending order 4.70, 4.381, 4.8, 4.090 4. What should be added to the sum of 4.321 and 5.502 to get 12.25?​

Answer 1

1) 72 = 2 x 2 x 2 x 3 x 3.

2) See attached image

3) See attached image

4)LCM is 600 ( see attached image )

There are three images attached .

Chapter 8 decimals I don't know

Hope the above matter helps:-)