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Published byKaylee Blevins Modified over 4 years ago

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Babylonian Maths Numbers in base 60

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What do you think these five numbers are?

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20

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What do you think these five numbers are? 20 40

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What do you think these five numbers are? 20 53 40

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What do you think these five numbers are? 20 28 53 40

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What do you think these five numbers are? 20 4928 53 40

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In base 60 … Any number between 1 and 60 corresponds to the units in our numbers. Getting to 60 in base 60 is like getting to 10 in base 10. We dont need a new symbol when we get to 10, and the Babylonians didnt need a new symbol for 60.

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What do you think these three numbers are? 60 + 1060 + 20120 + 10 = 70= 80= 130

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What do you think these two numbers are? 2 x 60 + 133 x 60 + 28 = 133= 208

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Writing numbers in base 60 You dont have to write base 60 numbers in cuneiform symbols. Look at these base 60 numbers – can you work out what they mean? Can you change these base 10 numbers into base 60? Base 600 181 393 0611 20 Base 101860 + 39 = 99180 + 6 = 186660 + 20 = 680 Base 102969149299 Base 60291 092 294 59

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Zero The Babylonians didnt have a separate symbol for 0. This number would have meant 3600 + 1 = 3601 The zero lots of 60 would have just been a gap. Is this a good way of showing a zero, do you think?

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