Step by step
The question
Question: write with math signs: the sum of a number and 11.
the sum of a number and 11
1 Change words to math
2 Put it in order
So we get n + 11.
= n + 11
3 Check
Let's check with a number.
Say the number is 10.
The sum of 10 and 11 is 21.
the sum of 10 and 11 is 21
And 10 + 11 is 21 too.
So n + 11 is right!
10 + 11 = 21
Let's look back.
First: change words to math.
Then: put it in order.
Last: check.
Answer
= n + 11