Question

A pair of shoes costs $45.95. There is 9.5% sales tax on it. How do you estimate the total bill to check for reasonableness?

Take of $50 and add the result to $50.
Multiply 45.95 by 9.
Add 50 and 10.
Divide 45.95 by 100, and multiply the result by 9.5.

Answer 1

Take 10% of $50, which is $5, and add it to the price of the shoes.

5 + 50 = 55

The total bill should be somewhere around $55.