Numbers in the ten thousands

Japanese school year: Elementary 3

What you learn

Students learn how to read, write, and understand numbers in the ten-thousands place, using ten thousand as a new unit. These numbers are commonly used for describing city populations or prices of electronics. Familiarity with numbers up to 10,000 and the decimal place-value system provides the necessary background.

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Key points

This equation shows how $100000$ (one hundred thousand) is formed in base-10. Ten groups of $10000$ make $100000$ ; multiplying by $10$ shifts the value one place to the left.

10 \times 10000 = 100000

This equation shows the relationship between thousands and $10000$ . Ten groups of $1000$ carry over to form $10000$ .

10000 = 10 \times 1000

This rule explains how to read numbers ten thousand and above. Within the myriad group, the four-digit cycle of ones, tens, hundreds, and thousands repeats as $1$ , $10$ , $100$ , and $1000$ ten-thousands.

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Practice 1Coming soon