Sally sews 4 shirts on Monday, 3 shirts on Tuesday, and 2 shirts on Wednesday. Each shirt has 5 buttons. How many buttons does Sally need to sew all the shirts?
Let's think step by step below.
45
Total number of shirts Sally sews is 4 + 3 + 2 = 9 shirts.

The total number of buttons she needs is 9 x 5 = 45 buttons.

.

Thus, the answer is 45