Question

Q.(4) Solve any nine of the following : (8 x 3 = 24)

(1) Add the following decimals :

(a) 150, 230.94, 37.058 (b) 76.98,0.07,9.99

(2) Subtract :

(a) 177.38 198 (b) 189.99 197.007

(3) If = 1, = 2 and = 4, find the value of 5

+ –

.

(4) Subtract : 5 − 8

– 9 + 3 from 9 − 5 + 17

6

.

(5) By how much does 5 exceed 9 – 5 + 14 ?

(6) Find each of the following ratios in its simplest form

(a) 58 minutes to 1 hour (b) 2.8 kg to 6 kg

(7) Find the value of x in each of the following proportions :

(a) 5 ∶ 8 ∶∶ 25 ∶ (b) 57 ∶ ∶∶ 51 ∶ 83

(8) Find the perimeter of a rectangle in which length = 27.6 m and breadth = 5m 3cm.​

Answer 1

Answer:

1) a) 417.998 b) 27.03

7) a) 40