Adding Subtracting Multiply Divide

Multiplying by 9 is the inverse of ...

• Adding 9

• Subtracting 9

• Dividing by 9

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5

• Subtract 5

• Multiply by 7

• Subtract 7

What is the first step you should take to solve this problem?

• subtract 8n to both sides

• multiply 6n to both sides

• combine the like terms 4n + -6n

• add 1 to both sides

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides of the equation

• Subtracted 9 from both sides of the equation

• Multiplied both sides of the equation by 3

• Added -3 to both sides of the equation

What is the error?

• Adding 2x to 3x

• Subtracting 5 from both sides

• Adding 2x to -2x

• Dividing by 5 on both sides

Solve: 5x + 15 = 10x - 40

• x = 10

• x = -10

• x = 11

• x = -11

When adding or subtracting RATIONAL NUMBERS with LIKE DENOMINATOR denominator you should

• multiply the denominators

• add or subtract the numerators

• keep the denominator

• simplify if need

A fraction represents which operation

• addition

• subtraction

• multiplication

• division

Which operation is represented by the parenthesis in the expression below:

• addition

• subtraction

• multiplication

• division

When adding or subtracting rational numbers, what must you have?

• Common Numerator

• Quick Answering Skills

• Common Numbers

• Common Denominators