Let's solve the problem shown on the whiteboard step by step.
---
Problem Statement:
"First add 12 and 6, then subtract the result from 20."
We are asked to write a
single number sentence that represents this sequence of operations.
---
Step-by-step Breakdown:
1.
Add 12 and 6:
$$
12 + 6 = 18
$$
2.
Subtract the result (18) from 20:
$$
20 - 18 = 2
$$
So, the final answer is
2.
---
Writing a Single Number Sentence:
We need to express both steps in one expression.
We want:
> Subtract (12 + 6) from 20
This translates to:
$$
20 - (12 + 6)
$$
Now simplify:
$$
20 - 18 = 2
$$
✔ So, the
single number sentence is:
$$
\boxed{20 - (12 + 6) = 2}
$$
---
✔ Final Answer:
$$
\boxed{20 - (12 + 6) = 2}
$$
This correctly follows the order of operations and matches the instructions given.
Parent Tip: Review the logic above to help your child master the concept of 4th grade math lessons.
