Fractions
By Brandon Johnson
Add & Subtract Fractions
How to Add & Subtract Fractions:
Step 1: Find a common denominator. What ever you do to the denominator you have to do to the numerator too.
Step 2: Add or subtract normally but don't add or subtract denominator.
Step 3: Simplify as much as possible.
Multiplying Fractions
How to Multiply Fractions
Step 1: Multiply across.
Step 2: Simplify fractions to lowest possible numbers. To do this, see if the numerator and the denominator can be divided by the same number. If so, divide. Do this again and again until you can't.
Alternatively:
Step 1: Simplify diagonally. To do this,
Step 2. Multiply across.
Dividing Fractions
How to divide fractions:
Step 1: Get the second fraction's reciprocal, by flipping it.
Step 2: Multiply normally then simplify. Or cross simplify before multiplying.
Multiplying Decimals
How to Multiply Decimals:
Step 1: Multiply the decimals like normal numbers.
Step 2: Count the number of spaces to the decimal in each number you multiplied.
Step 3: Add those and count that many over in your product. That is your answer!
Dividing Decimals
How to Divide Decimals:
Step 1: Make it a whole number by moving the divisor's decimal to the right until it's whole. Like fractions, whatever you do to the divisor, you have to do to the dividend.
Step 2: Divide normally. Remember ring the decimal straight up.