Lesson 50: Finding an Average

Brad’s swim times in seconds are

80, 85, 90, 85, and 90.

What is the average of

Brad’s swim times?

• 85 seconds

• 86 seconds

• 90 seconds

• 92 seconds

Tags

CCSS.4.MD.B.4

There were 11 students in one line

and 17 students in the other line. If the lines were rearranged

to have the same number of students, how many students

would be in each line?

• 12 students

• 13 students

• 14 students

• 15 students

Tags

CCSS.2.OA.A.1

If water is poured from glass to glass until the amount of water

in each glass is the same, how many ounces of water will be in

each glass?

• 4 ounces

• 5 ounces

• 6 ounces

• 7 ounces

Tags

CCSS.3.MD.A.2

Here are Shauna’s game points:

8, 9, 7, 9, 8, 10, 6, 7

What is the average of Shauna’s game points?

Tags

CCSS.7.EE.B.3

How many minutes is

2 hours and 15 minutes?

Tags

CCSS.4.MD.A.1

CCSS.5.MD.A.1

Four hundred years is how many centuries?

Tags

CCSS.6.RP.A.3D

Use digits to write fifty-four thousand, nine hundred

nineteen.

Tags

CCSS.4.NBT.A.2

There were 15 children in one line and 11 children in another line.

Some children moved from the longer line to the shorter line, so there were

the same number of children in each line.

How many children were there in each line?

Tags

CCSS.2.OA.A.1

 $1\ \frac{1}{7}\ +\ 2\ \frac{2}{7}\ +\ 3\ \frac{3}{7}$  

•  $6\ \frac{6}{21}$  

•  $\frac{10}{7}$  

•  $6\ \frac{6}{7}$  

•  $5\ \frac{10}{7}$  

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

 $9\ \frac{9}{10}\ -\ \left(7\ \frac{7}{10}\ -\ 5\ \frac{5}{10}\right)$  

•  $-3\ \frac{3}{10}$  

•  $7\ \frac{7}{10}$  

•  $7\ \frac{7}{0}$  

•  $3\ \frac{3}{30}$  

Tags

CCSS.7.NS.A.3