Danielle wanted to purchase a blouse with $100 she received on her birthday. She already spent $47 on CDs. The blouse she wants cost$43. Which operation would she use to make sure she had enough money to buy the blouse?

The subtraction operation

Step-by-step explanation:

Danielle was gifted $100 for her birthday which she planned buying a gown from. Now she bought some CDs totaling an amount of $47

The gown costs $43. Now, for her to be sure she has enough money to purchase the gown, the operation she needs to do is to subtract the money spent on CDs from the total money she had received.

And that is given by $100 - $47

This operation will give her the assurance that she indeed has enough money to purchase the gown after spending money on the CDs