Converting Fractions 1 3434 means that you have 3 out of 4 available pieces of something. This is...
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Transcript of Converting Fractions 1 3434 means that you have 3 out of 4 available pieces of something. This is...
Converting Fractions 1
3
4means that you have 3 out of 4 available pieces of something.
This is called a FRACTION, but we can also show this amount in other ways.
FRACTIONS can be converted to DECIMALS
Converting Fractions 1 - DECIMALS
DECIMALS aren’t as accurate as fractions, but are sometimes easier to understand.
1
25of £1 isn’t as easy to understand as £0.04
(or 4p)
Decimals are easier to put in order than fractions, especially with a calculator.
Converting Fractions 1 - DECIMALS
To convert any FRACTION to a DECIMAL with a calculator we just type:
NUMERATOR ÷ DENOMINATOR =(top number) (bottom number)
1
25becomes 1 ÷ 25 = 0.04
Converting Fractions 1 - DECIMALS
To convert any FRACTION to a DECIMAL without a calculator we have to do a DIVISION calculation:
1 ÷ 25 25 ) 1
Converting Fractions 1 - DECIMALS
1 shared into 25 parts can’t go, so just add a 0 after the DECIMAL POINT
1 ÷ 25 25 ) 1 . 0
0 .
pretend that the decimal point isn’t there, and read this as 10 instead of 1.0
Converting Fractions 1 - DECIMALS
10 shared into 25 parts can’t go, so we add another 0
1 ÷ 25 25 ) 1 . 0 0
0 . 0
Converting Fractions 1 - DECIMALS
100 shared into 25 parts goes exactly with no remainder
1 ÷ 25 25 ) 1 . 0 0
0 . 0 4
Converting Fractions 1 - DECIMALS
sometimes we have a remainder.
1 ÷ 3 3 ) 1
0
Converting Fractions 1 - DECIMALS
10 ÷ 3 is 3 with 1 remaining
1 ÷ 3 3 ) 1 . 0
0 . 3
1
Converting Fractions 1 - DECIMALS
10 ÷ 3 is 3 with 1 remaining
1 ÷ 3 3 ) 1 . 0 0
0 . 3 3
1 1
Converting Fractions 1 - DECIMALS
10 ÷ 3 is 3 with 1 remaining
1 ÷ 3 3 ) 1 . 0 0 0
0 . 3 3 3
1 1 1
once we can see a pattern we can see what the next numbers will be.
Converting Fractions 1 - DECIMALS
10 ÷ 3 is 3 with 1 remaining
1 ÷ 3 = 0.33333333333333……
this can be written as 0 . 3 read as 0 . 3 RECURRING
The dot means repeat this number.
.