Unit 7.2 Topic 1

3a + 4b - a + 5 is an expression

What are the operators in the expression?

• 3a and 4b

• +, -

• 5

• a and b

3a + 4b - a + 5 is an expression

What are the terms in the expression?

• +, -

• 3a, 4b, a, 5

• 5

• There are no terms in the expression

3a + 4b - a + 5 is an expression

What are the constants in the expression?

• none of them are constants

• +, -

• 3a, 4b, a

• 5

3a + 4b - a + 5 is an expression

What are the coefficients in the expression?

• 5

• a and b

• 3 and 4

3a + 4b - a + 5 is an expression

What are the like terms ?

• 3a and 4b

• 3a and a

• b

• 3,4 and 5

3a + 4b - a + 5 is an expression

What does 'a' represent?

• 0

• 1

• 0a

• 1a

Simplify this expression by collecting like terms:

a + a + a + a + a

(a)  

Simplify this expression by collecting like terms:

5b - 4b

(a)  

Simplify this expression by collecting like terms:

4c + 3d + 3 - 2c + 6 - d

(a)  

Simplify this expression by collecting like terms:

4r + 6s - t

• it can't be simplified

• 10rs - t

• r + 2s - t