Chat with our AI personalities
When dividing numbers with exponents, subtract the bottom exponent from the top exponent.
Regrouping in subtraction means that if you can't subtract because the digit on the bottom has a greater value than the digit on the top (such as 3-6), you have to "regroup" and subtract on from the top digit to the left of the digits your working with and then add a ten to the top digit your working with. Finally, you subtract. (645-9=630+15-9) Hope that makes sense!
If the two bottom numbers are the same, you will carry that same number over to the denominator in the answer. To get the numerator (top number) simply subtract the two numerator and place the number over the answer denominator.
subtracting similar fractions is just like adding them. You only subtract the numerator (top part) and then copy the denominator (bottom part). 4/5 - 1/5 = 3/5
Numerator on top; denominator on the bottom.