Question

Answer the following
1. In each of the following numbers, replace * by the smallest number to make it
divisible by 9:
(a) 66784 *
(b) 538 * 8
2. It was estimated that because of people switching to
Metro trains,about 33000 tonnes of CNG, 3300 tonnes of
diesel and 21000 tonnes of petrol was saved by the end of
2007. Find the fraction of :
(a) the quantity of diesel saved to the quantity of petrol saved
(b) the quantity of diesel saved to the quantity of CNG saved.
3. A rectangle is divided into a certain number of equal parts. If 16 of the parts so
formed represent the fraction 1\4 , find the number of parts in which the rectangle
has been divided.
4. Perimeter of a square and a rectangle is the same. If a side of the square
is 15cm and one side of the rectangle is 18cm, find the area of the
Rectangle.
5. Arrange the following in ascending order
(a) 1\2, 2\3, 5\6, 3\8
(b) 3\4, 2\3, 5\8, 7\9, 11\12

Answer 1

Answer:

a) 5

b)3

2. A)

fraction =3300/21000= 11/70

B)

fraction= 1/10

3.16 part = 1/4 of total

16×4=64=total no.of parta

4.

area of rectangle= 12×18

= 216

5. ⅜ < ½< ⅔ <. ⅚

Step-by-step explanation:

a) 5

b)3

2. A)

quantity of diesel saved =3300 tonnes

quantity of petrol saved=21000 tonnes

fraction =3300/21000= 11/70

B)

quantity of diesel saved =3300 tonnes

the quantity of CNG saved.=33000 tonnes

fraction= 1/10

3.

16 part = 1/4 of total

16×4=64=total no.of parta

4.

4a=2(l+b)

4×15 =2(18+b)

30-18=b

12=b

area of rectangle= 12×18

= 216