Lesson 14 Session 1 and 2 Ready Classroom

How do you find the mean of a set of numbers?

What is the mean of the temperatures recorded by Noah over the week: –7.3°F, –11.2°F, 2.2°F, 0°F, –1.7°F, 3.3°F, 0°F?

What is the approximate value of –24 3/4 + 15 1/4 if you round to the nearest integer?

Enrique says that to round a decimal to the nearest integer, you can just ignore the decimal part. Is Enrique correct? Explain.

What is the mean of the elevations recorded by Mei at Death Valley National Park? -32.6, 24.7, -8.3, 19.1, -8.4

Which of the following are examples of rational numbers?

Elena sells replacement parts for pinball machines. One customer buys a part that costs $44.50 and returns two parts that cost $26.30 and $21.40. Is the cost of the new order more or less than the returns?

Elena sells a part for $44.50 and accepts returns of two parts costing $26.30 and $21.40. The net amount Elena receives is ___ dollars.

Glen, Andre, and Ramón share the cost of renting a vacation cottage. The total cost is $960. Glen pays 30% of the total cost. Andre pays 0.45 of the total cost. Ramón pays the rest. How much does Ramón pay? Show your work.

Simplify    $$\frac{0.5\left(-77.8\ -\ 11\right)}{-4}$$   . Show your work.