Letters Stand for Numbers
I can use a variable to represent an unknown number and write an expression for a situation.
📘 Word Bank + Sentence Frames
variableunknownexpressionrepresent
- A variable (like n) stands for a number we don't know yet.
- Frame: "Let ____ = ____. The expression is ____."
👀 See It
"5 more than a number" → let n = the number → n + 5.
✏️ Your Turn
0 of 3 checks complete
1. "3 more than a number n" is…
2. "A number n times 4" is…
3. Let c = cookies. "2 fewer than c" is…
💬 Explain Your Thinking
Write a situation and an expression for it:
"Let blank = blank. My expression is blank, because blank."