4/4 = 1
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4 is an integer and so has denominator 1. 0.7 is a proper fraction and cannot have a denominator of 1.
1 = 4/4
A fraction in lowest terms is one in which the numerator and denominator have a GCF of 1. An example is 4/9
A proper fraction is between 0 and 1. A proper fraction has the numerator less than the denominator. The numerator is the top number, and the denominator is the bottom number. If the fraction has a numerator, which is half of the denominator, then it is half and anything with a numerator greater then half the denominator but not greater than the denominator is between 1/2 and 1.
The denominator is the number underneath the numerator in a fraction as for example in the fraction 3/4 the numerator is 3 and the denominator is 4