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Does the Identity Property of Multiplication work for Division?
NO it si like addition and subtraction IT DOESN'T WORK. Since Multiplication is somehow Addition made easier (4x2=8 ; 4+4=8), it can't be because Division is more of Subtraction and somehow to simplify answers at some cases. 1 x a = aa / 1 = a
Why addition and multiplication are easier than subtraction and division in computer?
Well, actually, division is just multiplication in reverse. Take 21 divided by 3 for example, and 7 times 3 is 21, so 7 is the answer for division. Try some new numbers and you'll get it! I've mastered division, so will you.
Which Chinese accomplishment made addition subtraction multication and division faster and easier?
The invention of the abacus.
Do you need common denominators when subtracting fractions?
Yes. You need common denominators if you want to:Add fractionsSubtract fractionsCompare fractions ("which is larger?")You do not need common denominators to multiply or divide fractions. Thus, in the case of fractions, multiplication and division is actually easier than addition and subtraction.
When doing fractions why is it easier to multiply and divide fractions than add and substract fractions?
It is easier to multiply or divide fractions than to add or subtract fractions because in multiplication, you just have to multiply the numerator by the numerator and the denominator by the denominator. Same applies with division of fractions, except that you have to reciprocate the fraction you're dividing with (divisor) then proceed to multiplication. Whereas, in addition and subtraction of fractions, you still have to get their Least Common Denominator (LCD).
