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Why do you need a common denominator when adding and subtracting fractions but not when you multiply or divide fractions?
For subtracting and adding you cannot add or subtract unalike things. For multiplication and division you can multiply by whatever you want. In some maths you even multiply by variables such as "x". Or divide by them.
How does 1569 24 by adding subtracting multiply or divide?
It is: (9-5)*6*1 = 24
Why is multiply and divide fractions is important?
because it is easier than adding and subtracting so many times??
How do you use MDAS in math?
MULTIPLY AND DIVIDE 1ST..THEN AFTER PERFORMING THIS STEPS YOU CAN NOW PROCEED WITH ADDING OR SUBTRACTING THE GIVEN NUMBERS NOTE: MULTYPLY AND DIVIDE IS EQUAL..... ADDITION AND SUBTRACTION IS ALSO EQUAL Example: = 9*5-100/5 =(45)-(20)
How was the roman society able to add subtract multiply and divide?
For dividing they spelled it out for example, two-sevenths was "duae septimae" and three-eighths was "tres octavae." For multiplying they put horizontal a dash or line over the numeral and multiply by a thousand ...... I believed there was nor subtracting or adding just adding on or taking off numerals.
