Alexander Little
05/07/2024 · Primary School
10. Cassy has 9 books on her bookshelf and 3 books on her desk. She wants to know how many books she has in all. What operation should she use? Explain.
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
To find out how many books Cassy has in total, she should use the addition operation.
Here's why:
Cassy has 9 books on her bookshelf and 3 books on her desk. To determine the total number of books, she needs to combine the two quantities. Addition is the mathematical operation used to combine two or more numbers to find their total.
So, she would calculate it as follows:
9 (books on the bookshelf) + 3 (books on the desk) = 12 (total books)
Therefore, the operation she should use is addition.
Quick Answer
Cassy should use addition to find the total number of books.
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