1368 divided by 3800?

2008-05-17 3:46 pm
best way to work this out? a good explanation of each step please

回答 (7)

2008-05-17 3:49 pm
✔ 最佳答案
Use a calculator.

1. Find calculator.
2. Turn it on.
3. Change batteries as they have run out.
4. Type in the 1st number.
5. Type in the divide sign.
6. Type in the 2nd number.
7. Press the equals sign.
8. Your answer appears on the screen.
9. Turn off calculator.
2008-05-17 3:51 pm
use a calculator
2008-05-19 9:36 am
1368 / 3800
divide top and bottom by 4
342 / 950
divide top and bottom by 3
171 / 475
2008-05-17 4:10 pm
First take out common denominators 1368/3800 (devide by 2) => 684/1900 => 342/950 => 171/475

Now, long devision:

2nd line is where you start (initial), work down, but use the top line to place your answer

= 0.36 answer
----------------------
475 | 171.0 initial

142.5 (a)
---------------
28.50 (b)
28.50
----------
0.00

475 does not go into 171 so add a zero to the top answer and a decimal marker (full stop) . Add a '.0' to 171.

475 goes into 1710 three times (3x475 = 1425 or 142.5 when you re-introduce the decimal) so add that to your answer after the decimal. The difference is 28.5 (goes to line (b).

Add another zero after the decimal in (b) to get 28.50 [475 goes into this 6 times (if you ignore the decimal) so add 0.06 to your answer (having reintroduced the decimal)
2008-05-17 3:51 pm
calculator= .36

factoring= 171/475(by dividing both sides by 8)
2008-05-17 3:50 pm
1368/3800
= (1368 ÷ 152)/(3800 ÷ 152)
= 9/25
= 0.36
2008-05-17 3:50 pm
The first step is to look for the highest common factor between 1368 and 3800. In this case it is 152, and then divide both by this number.
so 1368/3800
= (1368/152)/(3800/152)
= 9/25
= 9 * 0.04
= 0.36

The step to getting the highest common factor is to break down each number by dividing by the lowest common factors, dividing by each prime number that can be divided into it.

1368/2 = 684
684/2 = 342
342/2 = 171
171/3 = 57
57/3 = 19
19/19 = 1

3800/2 = 1900
1900/2 = 950
950/2 = 475
475/5 = 95
95/5 = 19
19/19 = 1

The common factors between these two numbers are:2, 2, 2, and 19. So the highest common factor is 2*2*2*19 = 152.

*βω*


收錄日期: 2021-05-01 10:30:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080517074611AAfWxuM

檢視 Wayback Machine 備份