Divide the denominator (bottom number) into the numerator (top number). A fraction is a division. Here's an example. 12/4 becomes 12 ÷ 4 = 3.
To visualize this, think of a Pizza. Say it's one of those personal pizzas and you slice the pizza into four equal slices (fourths, quarters, or 1/4 the original whole pizza). So 4/4 equals one pizza. Now if you take 12 of those (1/4 size) slices, you have 12/4 of a pizza, equal to 3 whole pizzas.
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A whole number to an improper fraction:First lets define an improper fraction. An improper fraction is a fraction at which the numerator (top) is greater than the denominator (bottom).To change a whole number to an improper fraction you simply add a one to the bottom of your whole number. For example, 5 would be 5/1 in improper fraction form. 6 would be 6/1 an so forth.
multipy the whole number by the denometer, then add that number to your numerator. now that is your numerator and your denomater stays the same.
To convert an improper fraction to a mixed number, divide the denominator into the numerator. The answer is the whole number. Put any remainder over the original denominator to create the fraction part.
To divide a whole number by a mixed number, you must first make the mixed number an improper fraction. You can do this by multiplying the denominator (the bottom number) by the whole number and adding the numerator (the top number) to the product. Once you have done this, take the reciprocal of the improper fraction (simply switch the two numbers around) and multiply it the whole number. Multiply everything out, make it a mixed number, and you're done. (Note: You may have to make the whole number a fraction to multiply it properly. To do this, simply place the whole number in the numerator and make the denominator 1.)
43 is an integer, not an improper fraction nor a mixed number.