Bob, one strategy for estimation is rounding. If you round to the nearest whole dollar, you can find an approximate amount.
For example, if the cost for a can of soda is $1.06, that cost is about $1. Therefore, the cost for 12 cans of soda would be about $12.00. You can apply the same strategy...

Cancellation Policy
I allow students to cancel lessons up to one hour in advance, with no additional charge. Cancellations with less than 60 minutes than the scheduled start time of the lesson will result in a full lesson charge. My cancellation policy applies to lessons that are pre-scheduled with unconfirmed details. For example, if we have a scheduled lesson, but I don't receive confirmed...
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Teresa,
Let's break this down into smaller parts.
First, you are asked to use a variable to represent the second number. For example, you could use...
x to represent the first number
y to represent the second number
z to represent the third number
If the...

Fernanda, were you given choices to choose from, or are you supposed to generate any answer, as long as it is greater than 1/3 and less than 87/100?

Beverly,
To begin, you need to create a plan for finding how many calories are in 1/2 of a cup. 2/3 is greater than one half, but you can use your knowledge of 2/3 cup to help you solve this problem.
My first question is, "What denominator will help me identify how many calories...

Lois, to answer this question, you need to first determine the fractional part that represents the total shaded portion. Then, you can subtract that shaded portion from one whole to determine the unshaded portion.
To calculate the sum of the shaded portion, you need to add...