March Review

Measurement of Central Tendency

100

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

Subtract the smallest number from the largest

200

Find the mean of this data set:  88, 49, 32  (You can use a calculator)

56.33

300

What is the mode for this data set?

78, 98, 28, 48, 78, 48, 98, 78

78

400

What do you do if you are trying to find the median and there are two numbers in the middle?

Take the mean (or average) of the two numbers.

500

What is the median of this data set?

6, 4, 22, 12

9

Fractions

100

2/3 x 1/5

1/15

200

3/4 x 5/6

18/24 or 3/4

300

2/3 divided by 4/5

10/12 or 5/6

400

1/4 divided by 1/2

2/4 or 1/2

500

2/5 + 3/10

7/10

Evaluating Expressions

100

Evaluate this expression if a=4 

45-a=

41

200

Evaluate the expression if a=5

4(a)

20

300

Evaluate the expression if a=10 and b=20

4(a) + b=

60

400

Evaluate the expression if a=25 and b=20

5(b) + 2(a)=

150

500

Evaluate this expression if a=2 and b=3

a to the power of 3 plus b to the power of 5

251

Integers

100

73 + (-22) =

51

200

-456 + (-122) =

-578

300

-3445 + 444

-3001

400

843 - (-234) =

1,077

500

-345 - (-567)=

222