What is the quickest way to calculate this without a calculator?
But with next bill
400 • 0.75
(1 votes)
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Is the solution wrong after all?
Shouldn't it actually X:4.8+x=4:4+6?
I’d take a break, too.
0.75 are 3/4.
And if you’re wondering how to get it: a few breaks you should be able to me. Or 75/100 correspondingly shorten.
You should get that.
You have to imagine your head has a notebook. Then you write all the numbers of bills. With your sample task, the tip would be to leave the zeros from the 400=4 and at the 0.75 zero and comma.
Then 4 times 75=300
At the place where the comma at 0.75 stand, at the result add=300,00
Voila, the result is 300,00
(in the 5th, so something can be wrong!)
75% of 400
400 / 4 = 100 (corresponds to 25%)
400 – 100 = 300
0 ,75 is 3/4. 1/4 of 400 is 100. 3/4 is 300.
How do you know 0.75 3/4 are? So how’s the bill?
Experience and Logig.
Let’s try graphically:
Take a circle and halve it (symmetrically) in the middle.
Then you have 2 equal parts of the same size, which together give a whole.
So: 2× 50% = 100%
Share these two halves again symmetrical, you have four equal parts.
So: 4× 25% = 100%
And so 3× 25% = 75%
And if [1] = 100%, then [0.75] = 75%.
I hope you can understand.
Otherwise, grab a sheet of paper, pencil, ruler, circle and scissors…
Then you’ll just do it.
400 divided by 4 times 3.
Imagine it as a break! 3/4…
Greetings.
But why four times three?
0,75 are 3/4…
3 through 4, or hold only through 4 and then by 3.
It’s easier in this case.
Understood?
Well, actually you know, but if you don’t like numbers, you can just turn the decimal number 0.75 into a break.
Then would be 75/100.
You can do this with 25 bucks and then come to 3/4.
Understood?
(please ask!)
Jain how to get on account that are 0.75 3/4
400 * 3/4 ………………..400/4 = 100 …………….
4*75
simply sweeping the zeros away
So 4 • 75 and then add the zeros?
No. 4*75 is 300, just like 400*0.75.
400/4*3 = 300