Skill: Write whole numbers in standard form

To write a whole number in standard form, write one digit in each place-value position:

$$\text{hundred-thousands}\quad \text{ten-thousands}\quad \text{thousands}\quad \text{hundreds}\quad \text{tens}\quad \text{ones}$$

Use $0$ as a placeholder when a place has no value.

Example: Write six hundred two thousand, forty-seven in standard form.

1. Break the number into its place-value parts:

   • six hundred thousand = $600{,}000$
   • two thousand = $2{,}000$
   • forty = $40$
   • seven = $7$

2. Add the parts:

$$600{,}000+2{,}000+40+7$$

3. Place each digit in its correct position:

$$\begin{array}{r|r|r|r|r|r} \text{hundred-thousands} & \text{ten-thousands} & \text{thousands} & \text{hundreds} & \text{tens} & \text{ones}\\ 6&0&2&0&4&7 \end{array}$$

4. Read the digits as one number:

$$\boxed{602{,}047}$$

The zeros are important: there are no ten-thousands and no hundreds, so $0$ holds those places.