Year 9 - Mid Algebra Review

Vocabulary

100

A number on its own in an expression

Constant

200

The number multiplied by a variable

Coefficient

300

A single part of an expression separated by + or −

Term

400

A mathematical phrase with numbers/variables but no equals sign

Expression

500

A mathematical statement that shows two expressions are equal

Equation

Write Expressions

100

The sum of n and 2

n+2

200

The difference between x and 5

x−5

300

The product of 3 and y plus 12

3y + 12

400

The quotient of a and 4

 a/4

500

The product of 8 and b minus the sum of x and 4

8b−(x+4)

Subsitution

100

Evaluate x+2 when x=16

18

200

Evaluate 3a when a=5

15

300

Evaluate 2x+4 when x=7

18

400

Evaluate 5y−3 when y=6

27

500

Evaluate 2a²+3b when a=3, b=4

18 + 12 = 30

Add/Subtract Terms

100

Simplify: 2x+3x

5x

200

Simplify: 6a−2a

4a

300

Simplify: 3x+4y+2x

5x+4y

400

Simplify: 7b−3b+2a

4b+2a

500

Simplify: 4x+6b−12x−14b

−8x−8b

Multiply Terms

100

Simplify: 2×a

2a

200

Simplify: 3b×2

6b

300

Simplify: 4a×3b

12ab

400

Simplify: 2m²×3bm

6bm³

500

Simplify: 4b²g×8b³gf

32b⁵g²f