Year 9 Unit 5

What does it mean to "balance" an equation?

• To add the same number to both sides of the equation

• When an operation is performed on one side of an equation, the same operation must be performed on the other side

• To subtract a number from both sides

• To simplify both sides equally

What is an equation?

• A mathematical operation

• A mathematical statement containing an equal sign to show that two expressions are equal

• A mathematical formula

• A relationship between two numbers

What does it mean to "factorise" an expression?

• To expand the brackets

• To solve the equation

• To find the factors of an expression

• To simplify the equation

What is a formula?

• A number with an unknown variable

• An equation that describes the relationship between quantities

• A set of operations on numbers

• A sequence of numbers

What is the purpose of function machines in mathematics?

• To show a sequence of numbers

• To describe the relationship from a set of inputs to the set of outputs

• To simplify equations

• To balance an equation

What does the symbol ">" represent?

• The number on the left is greater than the number on the right

• The number on the left is smaller than the number on the right

• The numbers on both sides are equal

• The number on the left is the same as the number on the right

Which of the following is an integer?

• 3.14

• -5

• 0.5

• 1/2

What is the inverse of an operation?

• Two operations that perform the opposite of one another

• Two operations that are the same

• An equation that can be simplified

• A sequence of operations

What does the symbol "<" represent?

• The number on the left is greater than the number on the right

• The number on the left is less than the number on the right

• The numbers on both sides are equal

• The number on the left is the same as the number on the right

What does it mean to simplify an expression?

• To multiply both sides of the equation

• To write an equation or expression in a simpler form by collecting like terms or cancelling terms

• To add numbers to both sides

• To expand an equation