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Number · B2.1

Tiny and Huge

Step 1 of 7. A question to start.

Two impossible numbers

The Sun is 150,000,000 km away. A red blood cell is 0.000007 m wide.

Writing all those zeros is slow, and counting them is easy to get wrong.

Both numbers can be written as one small number times a power of ten.

The pattern is the same for huge and for tiny.

Read this step as text

The Sun is 150,000,000 km away. A red blood cell is 0.000007 m wide.

Writing all those zeros is slow, and counting them is easy to get wrong.

Both numbers can be written as one small number times a power of ten.

The pattern is the same for huge and for tiny.