Algebra Review

Vocab

100

The P in PEMDAS

Parenthesis

200

If I see an exponent on a number or variable what am I supposed to do with that number or variable?

Multiply it by itself this many times.

300

Which goes first in order of operations, Addition or Subtraction?

Trick question, either can be first you just have to go from left to right.

400

This word means unknown value in an equation.

Variable

500

This 5 letter phrase means the Order of Operations. 

Hint: Please excuse my dear aunt Sally.

PEMDAS

Fractions

100

1/10 + 4/10 (simplify if possible)

1/2 (or 5/10)

200

4/6 -1/3 (simplify if possible)

1/3 (or 2/6)

300

3/11 ÷ 5/22 (simplify if possible)

6/5

400

3/10 * 5/7 (simplify if possible)

3/14

500

2 1/2 * 3 1/3 (simplify if possible)

25/3

Positive vs. Negative

100

-5+17

12

200

-91+85

-6

300

2-(-7)

9

400

-3-(-9)

6

500

12-14

-2

Using PEMDAS

100

2 + 9* 2

20

200

7+3*4-6

13

300

2(4+3)-5

9

400

4(6-5)³-6

-2

500

15-(2)²+7

18

Where did I go wrong?

100

2+5*3=21 (bonus points if you give the right answer)

Multiply the 5*3 then add the 2

BP: 17

200

3/14 + 2/7 =5/14 (bonus points if you give the right answer)

You have to get like denominators before adding.

BP: 1/2 (or 7/14)

300

8+3*7-6=11  (bonus points if you give the right answer)

You need to multiply 3*7 then add and subtract from left to right.

BP: 23

400

-10+15=-25  (bonus points if you give the right answer)

Rewrite it so the bigger number is in the front, 15-10

BP: 5

500

4(2x-7)= 4(9x)=36x  (bonus points if you give the right answer)

You CANNOT combine 2x and 7 because they are not like terms. Instead multiply the 4 into the parenthesis.

BP: 8x-28