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10-111.

If five slices of pizza cost , how much do two slices cost? Ten slices? Half a slice?

If you first find the cost of one slice, it will help you to find the cost of any number of slices more easily.

The cost of one slice is . Now how can you use multiplication to find the cost of two and then ten slices?

The cost of half of a slice of pizza costs . Remember to show your work!