The expression for a number plus 3, multiplied by 6 can be written as:

$6 \times (x + 3)$

where $x$ represents the number.

Would you like further details or a breakdown of how this expression works?

Here are some related questions:

1. How do you expand the expression $6 \times (x + 3)$?
2. What is the distributive property in algebra?
3. How would you simplify the expression $6 \times (x + 3)$?
4. What is the inverse operation for multiplication in algebra?
5. How can you graph the equation represented by this expression?

Tip: Always remember the distributive property: $a(b + c) = a \times b + a \times c$.