There are 35 books in the bookcase. There are 7 books on each shelf. How many shelves are there? Explain how the equations \(35 \div 7 = {?}\) and \({?} \times 7 = 35\) both represent the situation.

There are 24 eggs in a container. There are 6 eggs in each row. How many rows of eggs are in the container?

Write an equation that represents the situation. Use a symbol for the unknown. Then answer the question.

Write a related division fact you know from each multiplication equation.

1. \(8 \times 5 = 40\)

2. \(2 \times 9 = 18\)

Lin knows \(8 \times 5 = 40\). Explain how she can use this fact to find \(8 \times 4\).

1. Mark or shade parts of the diagram to show the expression \((5 \times 7) + (2 \times 7)\).

   

2. Explain how you could use the diagram to find the value of \(7 \times 7\).

Noah finds \(9 \times 8\) by calculating \((10 \times 8) - (1 \times 8)\).

1. Make a drawing showing why Noah's strategy works.
2. Use Noah's strategy to find the value of \(9 \times 8\).