Math Rules

Question 1

Adding 2 negative numbers

Answer 1

Add and keep the negative sign

Question 2

Adding a negative and a positive number

Answer 2

Subtract and keep the sign of the larger number

Question 3

Subtracting 2 negative numbers

• 7 - 2 =

Answer 3

Add and keep negative sign

• 7 - 2= -9

Question 4

Order of operations

Answer 4

P E M D A S

Please Excuse My Dear Aunt Sabrina

1. Parenthesis
2. Exponents
3. Multiply
4. Divide
5. Add
6. Subtract

Question 5

Subtracting a negative number from a positive number when the negative number is larger than the positive number

Answer 5

Subtract and keep the sign of the larger number (the negative sign)

Question 6

When subtracting two negative numbers and one number is in parenthesis

• 7 - (-9)=

Answer 6

First change the operations sign from - to + to clear the parenthesis

• 7 + 9=

Then subtract and keep the sign of the larger number

• 7 + 9= 2

Question 7

When adding two integers, one positive and one negative, and one is in parenthesis

7 + (-14)=

Answer 7

First Change the operation sign to -

7 - 14=

Then subtract and keep the sign of the larger number

7 - 14= -7

Question 8

When multiplying numbers with exponents

Answer 8

Multiply as normal and add the exponents

Question 9

When dividing numbers with exponents

Answer 9

Divide as normal and subtract the exponents

Question 10

When dividing an inequality by a negative number

Answer 10

The inequality sign must be reversed