kevin is working with a group of community volunteers to replace rotting boards over the river walkway. they need to replace 7 boards that are each 3/4 feet long. how many total feet of board will they need for the job? This is a multiplication problem, because we have 7 sets of the same item. set up the multiplication expression.

Question

7x __________

Answer 1

To find the total length of boards needed, you can set up the multiplication expression as follows:

\( 7 \times \frac{3}{4} \)

This represents 7 boards, each 3/4 feet long. Now, you can calculate the total length:

\( 7 \times \frac{3}{4} = \frac{21}{4} \) feet.

This can also be expressed in mixed number form: \( \frac{21}{4} = 5 \frac{1}{4} \) feet.

So the multiplication expression is \( 7 \times \frac{3}{4} \).