1. Find Convert Fraction to Decimal of `3/4`
Solution:
Method-1: Long Division Method for 3 divided by 4
| 0 | .7 | 5 | 4 | 3 | .0 | 0 | − | 2 | 8 | | = 4 × 7 | | | 2 | 0 | | | − | 2 | 0 | = 4 × 5 | | | | 0 | |
| | 4 table | 4 | × | 1 | = | 4 | 4 | × | 2 | = | 8 | 4 | × | 3 | = | 12 | 4 | × | 4 | = | 16 | 4 | × | 5 | = | 20 | 4 | × | 6 | = | 24 | 4 | × | 7 | = | 28 | 4 | × | 8 | = | 32 | 4 | × | 9 | = | 36 | 4 | × | 10 | = | 40 |
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`3/4=0.75`
Method-2: Expand the denominator to be a power of 10.
`3/4`
If we multiply denominator 4 by 25, it becomes 100 (power of 10).
So multiply numerator and denominator by 25
`=(3 xx 25)/(4 xx 25)`
`=(75)/(100)`
100 has 2 zeros, So write 75 with 2 decimal point from the right
`=0.75`
2. Find Convert Fraction to Decimal of `1/2`
Solution:
Method-1: Long Division Method for 1 divided by 2
| | 2 table | 2 | × | 1 | = | 2 | 2 | × | 2 | = | 4 | 2 | × | 3 | = | 6 | 2 | × | 4 | = | 8 | 2 | × | 5 | = | 10 | 2 | × | 6 | = | 12 | 2 | × | 7 | = | 14 | 2 | × | 8 | = | 16 | 2 | × | 9 | = | 18 | 2 | × | 10 | = | 20 |
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`1/2=0.5`
Method-2: Expand the denominator to be a power of 10.
`1/2`
If we multiply denominator 2 by 5, it becomes 10 (power of 10).
So multiply numerator and denominator by 5
`=(1 xx 5)/(2 xx 5)`
`=(5)/(10)`
10 has 1 zeros, So write 5 with 1 decimal point from the right
`=0.5`
3. Find Convert Fraction to Decimal of `3/2`
Solution:
Method-1: Long Division Method for 3 divided by 2
| 1 | .5 | 2 | 3 | .0 | − | 2 | | = 2 × 1 | | 1 | 0 | | − | 1 | 0 | = 2 × 5 | | | 0 | |
| | 2 table | 2 | × | 1 | = | 2 | 2 | × | 2 | = | 4 | 2 | × | 3 | = | 6 | 2 | × | 4 | = | 8 | 2 | × | 5 | = | 10 | 2 | × | 6 | = | 12 | 2 | × | 7 | = | 14 | 2 | × | 8 | = | 16 | 2 | × | 9 | = | 18 | 2 | × | 10 | = | 20 |
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`3/2=1.5`
Method-2: Expand the denominator to be a power of 10.
`3/2`
If we multiply denominator 2 by 5, it becomes 10 (power of 10).
So multiply numerator and denominator by 5
`=(3 xx 5)/(2 xx 5)`
`=(15)/(10)`
10 has 1 zeros, So write 15 with 1 decimal point from the right
`=1.5`
4. Find Convert Fraction to Decimal of `10/3`
Solution:
Method-1: Long Division Method for 10 divided by 3
| | 3 | .3 | 3 | 3 | 3 | 3 | 3 | 1 | 0 | .0 | 0 | 0 | 0 | 0 | | − | 9 | | | | | | = 3 × 3 | | | 1 | 0 | | | | | | | | − | 9 | | | | | = 3 × 3 | | | | 1 | 0 | | | | | | | | − | 9 | | | | = 3 × 3 | | | | | 1 | 0 | | | | | | | | − | 9 | | | = 3 × 3 | | | | | | 1 | 0 | | | | | | | | − | 9 | | = 3 × 3 | | | | | | | 1 | 0 | | | | | | | | − | 9 | = 3 × 3 | | | | | | | | 1 | |
| | 3 table | 3 | × | 1 | = | 3 | 3 | × | 2 | = | 6 | 3 | × | 3 | = | 9 | 3 | × | 4 | = | 12 | 3 | × | 5 | = | 15 | 3 | × | 6 | = | 18 | 3 | × | 7 | = | 21 | 3 | × | 8 | = | 24 | 3 | × | 9 | = | 27 | 3 | × | 10 | = | 30 |
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`10/3=3.33333`
This material is intended as a summary. Use your textbook for detail explanation.
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