Q.3 Identify the operations (addition, subtraction, division, multiplication) in forming the following expressions and tell how the expressions have been formed.
(a) z + 1, z – 1, y + 17, y – 17
(b) 17y, $$\frac{y}{17}$$ , 5z
(c) 2y + 17, 2y – 17
(d) 7m, -7m + 3, -7m – 3
###### Answer :

(a) z + 1 $$\rightarrow$$ Addition, z ? 1 $$\rightarrow$$ Subtraction
y + 17 $$\rightarrow$$ Addition , y ? 17 $$\rightarrow$$ Subtraction
(b) 17 y $$\rightarrow$$ Multiplication
$$\frac{y}{17}$$ $$\rightarrow$$ Division
5z $$\rightarrow$$ Multiplication
(c) 2y +17 $$\rightarrow$$ Multiplication and Addition
2y ? 17 $$\rightarrow$$ Multiplication and Subtraction
(d) 7m $$\rightarrow$$ Multiplication
?7m + m $$\rightarrow$$ Multiplication and Addition
?7m? 3 $$\rightarrow$$ Multiplication and Subtraction