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Harper Mata
Mathematics
3 July, 14:29
Estimate 48% of 52?
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Darwin Liu
3 July, 14:37
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First, find the easy percentages (1%, 10%, and 50%)
50% is 1/2.
1/2 of 52 is 26. (1/2 of 50 is 25, and 1/2 of 2 is 1. 25+1=26)
10% is just moving the decimal place left one spot.
10% of 52.0 is 5.20
1% is just moving the decimal place left two spots.
1% of 52.0 is 0.520
Now, you can estimate 48% two ways. You can subtract 2% (2x1%) from 50%, or you can multiply 10% by 4 and add 8% (8x1%)
Since it'll be easier to subtract 2 than it will be to multiply by 4 and add 8, we'll subtract.
We'll round 0.52 to 0.5 to make it easier.
Multiplying 0.5 by 2 gives us 1.
26 (50% of 52) minus 1 = 25
48% of 52 is approximately 25.
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Rabbit
3 July, 14:46
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48% is very close to 50% which is half of a number. Instead of finding 48% of 52, lets just find 50% of it.
52/2=26
As we were 2% over, let's subtract 1 to make it seem more accurate.
Your answer is 25
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