Using a Letter for a Number/Combining Like Terms

Using a Letter for a Number

100

7 + 8 + 3b if b = 4

7 + 8 + 12

200

6 + 4 + (5j + 2) if j =3

6 + 4 + (15 + 2)

300

2p - 13 + p if p = 8

16 - 13 + 8

400

5r - 13 + 4j if r = 3 and j = 4

15 - 13 + 16

500

12h + y + (h - 1) if h = 3 and y = 9

36 + 9 + 2

Using a Letter for a Number and Solve

100

4 + 3 + ( 8c + 2) = ?  if c =3

4 + 3 + (8 x 3 + 2) =?

12 + (24 + 2) = ?

38

200

7 + 3h + 3 = ? if h = 9

7 + 27 + 3

37

300

7(g + 2) - 3 = ? if g = 10

7 (10 + 2) -3 =?

7(12) = ?

84

400

8f + 3f + 5 = ? if f = 4

8(4) + 3(4) + 5 = ?

32 + 12 + 5 =?

49

500

10/e + 12e - e + y = ? if e = 2 and y = 3

10/2 + 12(2) -2 + 3

5 + 24 - 2 + 3

27 + 3

30

Combining Like Terms

100

5r + 4r + 8y

9r + 8y

200

3w + 12f + 10w + 2f

13w + 14f

300

14k + 3b - 2k + 4b

12k + 7b

400

8v + 4x + 33x - 2v + 4a

6v + 37x + 4a

500

8h + 4f + 20h - 2f + 2h + 5p

30h + 2f + 5p

Algebra

100

What we use instead of an x to show multiplication now

nothing!

200

When a letter is next to a number it means we do what?

Multiply 

300

In algebra, what do we use to show division?

A fraction bar

400

When a number is right next to parentheses it means we do what?

Multiply 

500

The steps in order of operations 

Parentheses, Exponents, Multiplication, Division, Addition, Subtraction 

Other

100

How many kids does Mrs Lambkin have?

2

200

How many kids are in this class in total?

22

300

We can combine terms if they have the same:

Variable (letter)

400

We can use a letter to represent a number, it is called a ____________

Variable

500

Combining Like Terms is also Called: ___________

Simplifying