3/4 - 3/16
Please explain! Thanks!
Fractions are killing me!! How would you solve this problem?
2009-06-10 8:15 am
回答 (9)
2009-06-10 8:24 am
✔ 最佳答案
Ok First buy a calculator :PAnyways when you are doing fraction during addition or subtraction the denominator/bottom number has to be same.
So you find the common factor which is 16 as 4 is a factor so to make 3/4 have a denominator of 16 you must multiply it with 4 which also means multiplying the numerator (Top number)
So, 3*4/4*4 = 12/16
And then
12/16-3/16
9/16
Complete explanation
參考: Grade 4 knowledge
2009-06-10 3:24 pm
= 3/4 - 3/16
= 12/16 - 3/16
= 9/16
Answer: 9/16
= 12/16 - 3/16
= 9/16
Answer: 9/16
2009-06-10 4:25 pm
Find the least common multiple (LCM) of 4 and 16.
..4 = 2 * 2
16 = 2 * 2 * 2 * 2
----------------------------------
.....= 2 * 2 * 2 * 2
.....= 16
3/4 = (3 * 4)/(4 * 4) = 12/16
-3/16 = -3/16
3/4 - 3/16
= 12/16 - 3/16
= 9/16
..4 = 2 * 2
16 = 2 * 2 * 2 * 2
----------------------------------
.....= 2 * 2 * 2 * 2
.....= 16
3/4 = (3 * 4)/(4 * 4) = 12/16
-3/16 = -3/16
3/4 - 3/16
= 12/16 - 3/16
= 9/16
2009-06-10 4:03 pm
You have to get them to have the same number on the bottom.
Choose a number that both 4 and 16 will go into with no remainder.
16 will do nicely so put 16 on the bottom.
Next divide the original bottoms into this new one. 4 goes in 4 times, now multiply the top by 4, giving 12, so you have 12/16. Then 16 goes in once, so multiply the top by one. 1 x 3 is 3, so you have 3/16
Now you can subtract 12/16 - 3/16
The answer is 9/16
Choose a number that both 4 and 16 will go into with no remainder.
16 will do nicely so put 16 on the bottom.
Next divide the original bottoms into this new one. 4 goes in 4 times, now multiply the top by 4, giving 12, so you have 12/16. Then 16 goes in once, so multiply the top by one. 1 x 3 is 3, so you have 3/16
Now you can subtract 12/16 - 3/16
The answer is 9/16
2009-06-10 3:30 pm
12/16 -3/16=9/16
2009-06-10 3:21 pm
in order to add or subtract fractions they need a common denominator
you cant change the 16, but choose a convenient 1
1 = (4/4)
3/4*1 -> 3/4*(4/4) = 12/16
same number, now subtract, 3 from 12 = 9. ans = 9/16
you cant change the 16, but choose a convenient 1
1 = (4/4)
3/4*1 -> 3/4*(4/4) = 12/16
same number, now subtract, 3 from 12 = 9. ans = 9/16
2009-06-10 3:21 pm
first you have to make the denominator the same, in this case
3/4 - 3/16
multiply 3/4 with 4/4 so that the denominator will be 16
12/16 - 3/16
once the denominator is the same you can simply minus the numerator
9/16
3/4 - 3/16
multiply 3/4 with 4/4 so that the denominator will be 16
12/16 - 3/16
once the denominator is the same you can simply minus the numerator
9/16
2009-06-10 3:19 pm
make the common denominator 16ths because a quarter is 4 16ths.
So 12/16 - 3/16 = 9/16
So 12/16 - 3/16 = 9/16
2009-06-10 3:19 pm
12/16 - 3/16
=> (12-3)/16
=>9/16
=> (12-3)/16
=>9/16
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