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Fraction & Decimals
A Fraction consists 3 parts, A denominator, A numerator and A fraction line. Imagine a fraction as a pie
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A denominator is the number below the fraction line, it indicates how many pieces in total equals 1
E.g. 1/20 = totally needs 20 pieces
A numerator is a number above the fraction line, it indicates how many pieces are there.
E.g. 13/20 = there are 13 pieces out of 20
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There are 3 kinds of fractions,
Proper Fractions, Improper Fractions and Mix fractions.
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A Proper Fraction is a normal fraction where the denominator is larger than a numerator.
E.g. 1/2 3/4 12/45
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A Improper fraction is where the numerator is larger than the denominator.
E.g. 6/2 17/4 28/8
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A mixed fraction is a whole number mixed with a proper fraction.​
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Equivalent Fractions
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Some fractions look different but actually have the same amount.
E.g. 1/2 = 2/4 = 4/8
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That's why there is a simplest form for fractions, to do that just divide the numerator and the denominator with the same number.
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Fraction and decimals can switch to the other.
E.g. 0.5 = 1/2
0.025 = 1/100
Also fractions and decimals can be changed to percentages
E.g. 0.5 = 1/2 = 50%
1 digit &​ 2 digit
A digit is where a number represents it’s value.
Different numbers putting in different digits have different value.
For example,
3 in the tens digit is 30
6 in the hundreds digit is 600
In this case,
1-digit means the number only have one digit.
E.g. 0-9
2-digit number
E.g.10-99
​Decimal Point
A decimal point is represent as a dot to identify digits that are smaller than 1
E.g. 0.1 0.01
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Digits that are smaller than 1 have different names.
E.g. 0.1 is called tenth
0.01 is called hundredth
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Fraction line
A fraction line is a symbol to represent a portion,
E.g. 1/2 = half
1/4 = a quarter