Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Expressions, Formulae and Equations, Exercise 2: Exercise 2.1

Maliha thinks of a number $y$. Write an expression for the number Maliha gets when she multiplies the number by $3$.

Write an expression for this: $x$ more than $y$

Write an expression for this: $x$ less than $y$

Write an expression for this: $m$ more than two times $n$.

Write an expression for this: $a$ less than three times $b$.

Write an expression for this: $p$ multiplied by $q$.

Write an expression for this: four times $g$ multiplied by $h$.

The diagram shows two rectangles.

The green rectangle on the left has a width of $x \mathrm{cm}$. The length is six times the width.

The blue rectangle on the right has a width of $y \mathrm{cm}$. The length is $3 \mathrm{cm}$ more than two times the width.

Write an expression for the difference in the lengths of the rectangle.