Question

Emily buys 8 pizzas. If each pizza costs 7.99 dollars, estimate the total amount she has to pay.

Answer 1

Cost of 1 pizza = 7.99 dollars

Let us find the cost of 8 pizzas.

$\therefore$ We need to find the value of 7.99$\times$ 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:

$63\underset{–}{92}.0\to 63.920$

$\therefore 7.99\times 8=63.920$

Thus, 8 pizzas cost 63.92 dollars.

Estimating 63.92 to the nearest ones, we get 64.

$\therefore$ Emily has to pay around 64 dollars.