Question

1) Use number line and add the following:

1.1 9 + (-6)

1.2 5 + (-11)

1.3 (-1) + (-7)

1.4 (-5) + 10


2) Add the following without using number line:

2.1 11 + (-7)

2.2 (-13) + 18

2.3 (-10) + (-19)

2.4 (-9) + 4


3) Using decimals express:

3.1 5 paise as rupees

3.2 9 m 7 cm as metres

3.3 8 m as km

3.4 5 kg 8 g as kg


4) Add:

4.1 0.007 + 8.5 + 30.08

4.2 0.75 + 10.425 + 2


5) Subtract:

5.1 9.756 – 6.28

5.2 21.05 – 15.27

6) Find perimeters of:

6.1 A regular pentagon with each side measuring 3 cm

6.2 A rectangular hexagon with each side measuring 3 cm

6.3 A triangle of sides 3 cm, 4 cm and 5 cm

6.4 An equilateral triangle of side 9 cm


7) Find the area of:

7.1 A rectangle whose sides are 12 and 21 m

7.2 A square whose sides are14 cm


8) Write expression in each of the following case:

8.1 11 added to twice a number

8.2 5 times y to which 3 is added

8.3 x is multiplied by -8 and the 5 is added to the result

8.4 x is multiplied to 6 and result is subtracted from 16


9) Find the ratio of:

9.1 30 minutes to 1.5 hours

9.2 40 cm to 1.5 m

9.3 55 paise to Rs. 1

9.4 500 ml to 2 litres


10) Determine whether the following are in proportion:

10.1 15, 45, 40 ,120

10.2 4, 6, 8, 12

10.3 33, 44, 75, 100

10.4 21, 6, 35, 10​

Answer 1

Answer:

Answer. hence, the first option (9/16>13/24) is true.