Question

klaus was replacing the roof on his house. He used 420 nails to attach al the pieces of wood. Each piece of wood needed 7 nails to hold it in place. He used 40 pieces of wood. How many pieces were left?

Answer 1

There were 20 pieces of wood left.

Work:

420 ÷ 7 = 60

60 - 40 = 20

Your answer is 20.

Hope this helps!