Addition and Subtraction
Step 1: For a problem like 5/7 + 2/7 = ? since its denominator is 7, just add the 5 and 2, so the answer would be 7/7.
Step 1: For a problem like 5/6+3/4 you first find the least common denometer, which is 12.
Step 2: Change the problem now. Since you multiplied 6 by 2 and 4 by 3 you have to multiply the numerators.
Step 3: the new equation is 10/12 + 9/12 = 19/12* You can simplfy it to a mixed number if you want*. Subtraction is exactly the same thing but just subtract the numerators.
Common Denomoters- How to
This is a diagram for adding common Denomoters fractions.
Uncommon Denometers is a bit more harder but it's easy as you learn
Step 1. For a problem like 1/5 x 3/7. You just multiply both numerators and denometers.
Step 1: Problem- 5/7 divided by 3/4. Flip the second fraction(3/4) to 4/3. Then change the division to multiplation. Then multiply as usually. The answer is 20/21
Step 2- Count how many digits are from the last one to the decimal on each number. remember it!
Step 3- Multiply as normal.
Step 4- Once you are done, put the decimal how many you did on Step 2.
Ta- Daaa! You multiplied fractions.
Step 2- Do the same to the dividend.
Step 3- Move the decimal up to the top.
Step 4- Divide like normal.
Yay you divided decimals!!!