Equations

Vocab

100

What is a pronumeral?

A letter or variable to represent a number

200

What is the difference between an expression and an equation?

An equation has an equals sign while and expression has only terms

300

In statistics what is mode?

The score which occurs the most

400

In statistics what is range?

The difference between the highest and lowest score

500

In statistics what is median?

The middle score once they have been put in order

One-step

100

x+3=8

x=5

200

x-12=5

x=17

300

x+12=3

x=-9

400

4x=24

x=6

500

x-3.6=2.8

x=6.4

Two-step

100

2x-5=1

x=3

200

4x+3=23

x=5

300

2x+14=20

x=3

400

8x+19=99

x=10

500

2x+3.1=8.1

x=2.5

Single brackets

100

2(x+1)=6

x=2

200

3(x-5)=15

x=10

300

4(x+5)=20

x=0

400

5(x+4)=10

x=-2

500

10(x+3)=51

x=2.1

Simple quadratics

100

x²=16

x=4 and x=-4

200

x²=36

x=6 and x=-6

300

x²+1=10

x=3 and x=-3

400

x²+10=110

x=10 and x=-10

500

x²-3.1=21.9

x=5 and x=-5