Cost of 1 pizza = 7.99 dollars
Let us find the cost of 8 pizzas.
∴ We need to find the value of 7.99
× 8.
Let us multiply the numbers without the decimal point.
7.99 has two decimal places and 8 has no decimal places. Hence, the product has a total of two decimal places.
Shifting the decimal point in 6392.0 two places to the right, we get:
6392–––.0→63.920
∴7.99×8=63.920
Thus, 8 pizzas cost 63.92 dollars.
Estimating 63.92 to the nearest ones, we get 64.
∴ Emily has to pay around 64 dollars.