A fraction (from Latinfractus, “broken”) represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain size there are, for example, one-half, eight-fifths, three-quarters. A common, vulgar, or simple fraction (examples : 1/2 and 17/3) consists of a numerator displayed above a line (or before a slash), and a non-zero denominator, displayed below (or after) that line. Numerators and denominators are also used in fractions that are not common, including compound fractions, complex fractions, and mixed numerals. wikipedia
We use regrouping in addition when the sum of two digits in the place value column is greater than nine. Here’s how we regroup ones and tens to add 248 and 75. Regrouping is referred to as the “carrying forward” in addition and “borrowing” in subtraction problems.
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