Irina thinks of $ 460 \div 2$ as an area problem:
> 
She splits the rectangle into parts that are easily divisible by $2$:
> 
**Fill in the blanks.**
$\purple{a}=$ [[☃ math-keypad 1]] units
$\blue{b}=$ [[☃ math-keypad 2]] units
$w = $ [[☃ math-keypad 3]] units
$460 \div 2 =$ [[☃ math-keypad 4]]