Calculations

Calculations Worksheet-19

1. If 2x + y = 15, 2y + z = 25 and 2z + x = 26, what is the value of z ?

(a) 4                    (b) 7                    (c) 9                    (d) 11

2. If 2x + 3y = 31, y – z = 4 and x + 2z = 11, then what is the value of x + y + z ?

(a) 12                  (b) 13                  (c) 15                   (d) 16

Calculations Worksheet-20

1. Along a yard 225 metres long, 26 trees are planted at equal distances, one tree being at each end of the yard. What is the distance between two consecutive trees ?

(a) 8 metres      (b) 9 metres      (c) 10 metres    (d) 15 metres

2. A boy was asked to multiply a number by 25. He instead multiplied the number by 52 and got the answer 324 more than the correct answer. The number to be multiplied was :

(a) 12                  (b) 15                  (c) 25                  (d) 32

Calculations Worksheet-21

1. What fraction of  must be added to itself to make the sum ?

(a)                    (b)                   (c)                    (d)