Understanding Base 12 Numerical System

The video tutorial explains the base 12 numerical system, known as chi dos numbers, where each place value is a power of 12. It demonstrates how to convert a number from base 12 to base 10 by identifying the symbols and their place values, multiplying them, and summing the products. The example provided results in a base 10 number of 20,368.

What is the base 12 numerical system called?

• Chi dos numbers

• Binary numbers

• Decimal numbers

• Hexadecimal numbers

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CCSS.4.NBT.A.2

In a base 12 system, what is the place value of 12 to the second power?

• 12

• 144

• 1728

• 1

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CCSS.1.NBT.A.1

Which symbol represents the number 11 in the chi dos system?

• First symbol

• Fourth symbol

• Second symbol

• Third symbol

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CCSS.1.NBT.A.1

What is the value of the third symbol in the chi dos system?

• 4

• 5

• 11

• 9

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CCSS.5.NBT.A.3A

How do you convert a chi dos number to base 10?

• Divide each symbol by its place value

• Subtract the symbols from each other

• Multiply each symbol by its place value and sum the results

• Add the symbols directly

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CCSS.6.EE.A.1

What is the result of multiplying 11 by 12 to the third power?

• 12

• 1728

• 144

• 19,008

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CCSS.4.NBT.A.2

What is the base 10 equivalent of the chi dos number given in the video?

• 19,008

• 60

• 20,368

• 1,296

What is the sum of 9 times 144 in the conversion process?

• 4

• 60

• 1,728

• 1,296

What is the final step in converting a chi dos number to base 10?

• Sum the products

• Subtract the products

• Divide the products

• Multiply the products

What is the value of 4 times 1 in the conversion process?

• 1

• 4

• 12

• 60