A

1,000,000 x 1,000,000 =

Which is a 1 followed by 12 zeros.

Using

We could also think of it as a

Examples:

• the Andromeda Galaxy contains about a trillion stars

• it is about a trillion meters from Earth to Saturn

• there are around 3 trillion trees on Earth

• there are around 3 trillion fish in the ocean

• the human body has around 100 trillion cells (about 90 trillion are bacteria)

The prefix "tera-" means a trillion. Example: a terameter is a trillion meters.

Below is a cube made of a

**million millions**.1,000,000 x 1,000,000 =

**1,000,000,000,000**Which is a 1 followed by 12 zeros.

Using

**scientific notation**: 1 × 10^{12}We could also think of it as a

**thousand billions**.Examples:

• the Andromeda Galaxy contains about a trillion stars

• it is about a trillion meters from Earth to Saturn

• there are around 3 trillion trees on Earth

• there are around 3 trillion fish in the ocean

• the human body has around 100 trillion cells (about 90 trillion are bacteria)

The prefix "tera-" means a trillion. Example: a terameter is a trillion meters.

*(In many non-English speaking countries a trillion means a million million million, which is a 1 followed by 18 zeros, or 1 × 10*^{18})Below is a cube made of a

**million**smaller cubes. If each of the small cubes is**also**worth a million dollars, then the whole cube is worth a trillion dollars.
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