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Earn +20 ptsQ: What equals 640 using four 8's?
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How do you get the sum of 8 using four 8s?
8 + 8*(8-8) = 8 + 8*0 = 8 + 0 = 8
How can you use eight 8 to equal 0?
-- Split the 8s up into two groups of four. -- Do any kind of arithmetic or algebra you want to with one group of four 8s. -- Do exactly the same thing with the other group of four 8s, and give it a negative sign. -- Add the two groups of 8s. The sum is zero.
How many 8s in 2400?
Four
When a number is increased by 8 the original value is 75 percent of the new value What is the original value of the number?
So 25% of the new value is the newly-added 8. Therefore the original value is three times that, i.e. 24. This means that three 8s plus the other 8 - i.e. four 8s - equals 32.
How many 8s go into 65?
65 divided by 8 equals 8 with a remainder of 1.
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