i need to know work out 4/3 x 27, through my calculator i know the answer is 36 but i don't know how to work it out so when it comes to a real exam and if the question is in the non calculator paper (which it will be) i won't know what to do
can somebody please show me how to get to this answer
math multiplication problem??
2013-04-05 6:39 pm
回答 (10)
2013-04-05 6:44 pm
✔ 最佳答案
4/3 * 27= (4 * 27) / 3
= (4 * 9 * 3) / 3
because 27 = 3*9
the 1/3 cancels the 3 from the 27, so
= 4 * 9
= 36
2013-04-05 6:42 pm
The operators are division and multiplication, which are commutative, so it doesn't matter what order they are performed.
4/3 × 27 = (4 × 27) ÷ 3 = 4 × (27 ÷ 3)
4/3 × 27 = (4 × 27) ÷ 3 = 4 × (27 ÷ 3)
2013-04-05 6:42 pm
(4/3)*27
= 4*(27/3)
= 4*9
= 36 <<<
= 4*(27/3)
= 4*9
= 36 <<<
2016-11-02 2:42 pm
this could nicely be an fairly dumb question yet a=7 and B=5. it particularly is cuz the respond for watever b is it is going to bring about a nil whilst accelerated by making use of 8 to get the 0 in 2730 as quickly as u discover b juss divide and pass from there
2013-04-09 10:44 am
4/3 * 27
= 108/3
= 36 Ans.
= 108/3
= 36 Ans.
2013-04-07 3:28 pm
You need to go back to basics & forget a calculator. A calculator is useful to speed up the mathematical process, but you need to be able to work things out using a pen & paper, like I had to do at school!
4/3 x 27 is the same as writing 4/3 x 27/1
To multiply fractions is so easy; you just multiply the enumerators (in this case 4 & 27) and multiply the denominators (in this case 3 & 1)
So 4/3 x 27/1 = 108/3 = 36
(To work out 4 x 27 use long multiplication, or the 'grid' method you probably learned in primary school, but in my opinion, that takes longer!) Likewise long division for 108/3, or the 'chunking' method, but again that takes longer! I have had to teach my children (Yrs 11 & 10) long multiplication & long division because they had not been taught at school!)
4/3 x 27 is the same as writing 4/3 x 27/1
To multiply fractions is so easy; you just multiply the enumerators (in this case 4 & 27) and multiply the denominators (in this case 3 & 1)
So 4/3 x 27/1 = 108/3 = 36
(To work out 4 x 27 use long multiplication, or the 'grid' method you probably learned in primary school, but in my opinion, that takes longer!) Likewise long division for 108/3, or the 'chunking' method, but again that takes longer! I have had to teach my children (Yrs 11 & 10) long multiplication & long division because they had not been taught at school!)
2013-04-05 6:57 pm
when you're multiplying a number by a fraction, you can think about it as multiplying by the numerator and dividing by the denominator. so it's like (4*27)/3
now, 4*27 isn't very easy to do in your head, so what i would do is think about it as 4*(27/3) instead. that way you're doing the division first.
so you have:
4*(27/3)
= 4*9
=36
now, 4*27 isn't very easy to do in your head, so what i would do is think about it as 4*(27/3) instead. that way you're doing the division first.
so you have:
4*(27/3)
= 4*9
=36
2013-04-05 6:53 pm
Its easy in this case,
you can either divide 4 by 3 and multiply it with 27 or
you can divide 27 by 3 and multiply it with 4.
But its easier to divide 27 by 3 than dividing 4 by 3.
In some cases, there will be + or - or brackets..
like 2+3*5 or 2*(3+5)
You have to use the BODMAS rule in such cases.
BODMAS is Bracket Open, Divide or Multiply, Addition or Subtraction.
It represents what to do first...like,
in case of 2*(3+5)
you have to open the brackets first,so.. it can be either 2*3+2*5=6+10=16
or it can be 2*8=16
It is wrong to multiply 2 with 3 first and then add 5
like, 2*(3+5) =2*3+5 = 6+5 =11 (its wrong)
so, under BODMAS rule, you have to do the calculation in the corresponding order...
first bracket open, then division or multiplication, then addition or subtraction
you can either divide 4 by 3 and multiply it with 27 or
you can divide 27 by 3 and multiply it with 4.
But its easier to divide 27 by 3 than dividing 4 by 3.
In some cases, there will be + or - or brackets..
like 2+3*5 or 2*(3+5)
You have to use the BODMAS rule in such cases.
BODMAS is Bracket Open, Divide or Multiply, Addition or Subtraction.
It represents what to do first...like,
in case of 2*(3+5)
you have to open the brackets first,so.. it can be either 2*3+2*5=6+10=16
or it can be 2*8=16
It is wrong to multiply 2 with 3 first and then add 5
like, 2*(3+5) =2*3+5 = 6+5 =11 (its wrong)
so, under BODMAS rule, you have to do the calculation in the corresponding order...
first bracket open, then division or multiplication, then addition or subtraction
2013-04-05 6:43 pm
The only way I can work this out is if it is 4over3 as a fraction, x by 7.
If that's the case it won't be on a non-calculator paper because 3 doesn't go into 4 without a recurring number :)
Butttt 4/3 is 1.333333•. One third of 27 is 9. 27+9=36 :)
If that's the case it won't be on a non-calculator paper because 3 doesn't go into 4 without a recurring number :)
Butttt 4/3 is 1.333333•. One third of 27 is 9. 27+9=36 :)
參考: Got an A at maths GCSE :)
2013-04-05 6:43 pm
4/3 also equals 1.3, so 1.3 x 27
1 x 27 = 27
27/3=9
27+ 9 = 36
1 x 27 = 27
27/3=9
27+ 9 = 36
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