Order of Operations/Negative Numbers Review

Order Of Operations: Solving Steps

100

What do you complete first? What is the answer to that first step? 

3 + 6 - 9 - 5 + (2 x 9)

First step:(2 x 9)

Answer to the first step is 18

200

What do you complete first? What is the answer to that first step? 

6 ÷ 2 x 8 + 5 - 3

First step: 6 ÷ 2

Answer: 3

300

What do you solve first in this problem? Solve that step.

46 x 17 - (65 - 34)

First Step: (65 - 34) 

Answer: 31

400

What step is first step? Solve that step. 

10 ÷ 2 x (10 x 5) + 42

First Step: 10 x 5

Answer: 50

500

Charlie is solving the following problem, and gets an answer of 15

4--2xx(5+10)divide5-3

Identify Charlie's error, and find the correct answer

Charlie has forgotten to apply the order of operations and has just worked from left to right, starting with 4--2.

The correct order of steps is to resolve the brackets (5+10)=15, then multiply -2x15 = -30, then divide -30 by 5 = -6, then 4 - -6 = 10, then finally 10 - 3 = 7

Solve Order of Operations

100

(1+3) x 3

12

200

Solve. 

7 - 2 x 3 

1

300

Solve. 

9 ÷ 3 x 7

21

400

Solve.

8 x 2 + (45 ÷ 5)

25

500

Solve. 

10 + (8 x 4 - 54 ÷ 9)

36

Negative Number Multiplication & Division

100

Solve. 

5 x -2

-10

200

Solve. 

-36 ÷ -6

6

300

Solve. 

-7 x 8

-56

400

Solve. 

-6 x 3 ÷ -9

2

500

Solve:

2 x -3 ÷ (-24 ÷ 4)

1

Negative Number Addition & Subtraction

100

-5 - 8

- 13

200

-2 + 6

4

300

12 - (-8)

20

400

Solve. 

-14 - (-5)

-9

500

The Mariana Trench, the deepest part of the ocean, has a depth of approximately 11,034m below sea level. Mount Everest, the tallest mountain on Earth, has an elevation of 8,849m above sea level. What is the difference between these two heights?

remember below sea level is negative!

Difference = 8849 - (-11034) = 8849 + 11034 = 19883m

The difference in height between the peak of Mount Everest and the bottom of the Mariana Trench is approximately 19,883m