Algebra!

Key Terms

100

Variable

a letter used for a number that changes or a number we do not know

200

Coefficient

A number that is multiplied by the variable

300

Constant

A number that is on its own in an expression or equation

400

Operator

The symbol used to show what operation you need to complete

500

What is the difference between an equation and an expression? 

An equation has an equal sign where as an expression does not

Expressions

100

Eddie och hans kompisar har köpt en tårta att dela på. Den kostar x kronor och de är fyra barn som ska dela på kostnaden. Välj det uttryck som passar för hur mycket var och en ska betala.

x/4

200

Ella har z kakor att dela med sina kompisar. Sammanlagt är de nio barn. Skriv ett uttryck för hur många kakor de kan få var.

x/9

300

Edvin vet att det fanns 20 godispåsar i köket förut. Hans kompis Gabriella har ätit några godispåsar. Det finns nu z godispåsar kvar. Skriv ett uttryck för hur många Edvins kompis åt.

20 - x

400

Write an expression for what it costs to but 5 pens and 3 erasers: Erasers X kr      Pens 14kr

3x + 5 * 14

500

The art teacher is buying supplies for her next project. She buys 15 pens that cost a total of 175kr. Now she just needs to buy paper that cost 32kr per sheet. Write an equation for her total cost. 

32x + 175

Solve for X

100

24- 2x = 12

x= 6

200

4x/2 = 8

x=4

300

4x-2x = 16

x = 8

400

x/4 + 10 = 32

x = 88

500

(x-2) * 4 = 16

x = 6

Random

100

When you are solving for a variable what order you complete operations in?

SAMDEB

200

10 + 5 (9-4) = 

35

300

Who is Ms. Hill's favourite student? 

400

In the following equation what are the constants? 

3x + 2y - 14 = 14- 2y + 8

- 14, 14, 8 

500

What is William's favorite song? 

Walk it Like I Talk it