Math Review 1

Adding and Subtracting Decimals/ GCF and LCM

100

7.3 +  2.2= 

9.5

200

34.3- 12.1= 

22.2

300

200- 55.5=

144.5

400

Find the GCF between 9 and 18 

9

500

Find the LCM between 3 and 5

15

Place Value/ Multiply Decimals

100

13.23- What place is the underlined digit 

tenths 

200

100.009- What place is the underlined digit

thousandths

300

11.1 x 0.1= 

1.11

400

124 x 0.01

1.24

500

10.3 x 0.1= 

10.3x 0.01= 

10.3 x 0.001= 

1.03

.103

.0103

Exponents and Expressions

100

3³⁼ 

3x3x3= 27

200

5¹⁼ 

5

300

100⁰⁼ 

1

400

x + 12= 38 

solve for x

38-12= 26

500

x-33= 100

100 + 33= 133

Order of Operations

100

5² - 5 x2

25-10= 15

200

(10 x 2) + (10-2)

20 + 8= 28

300

(100-50) / 10 x 6= 

50/ 10= 5 x6= 30

30

400

70- 30 + 4²

40 + 16= 56

500

(13.4 + 1.6) / 5  + 7.2= 

15/5= 3

3+7.2=  10.2

Mean, Mode, Median and Range

100

Find the mode for the following data: 

50, 10, 20, 20, 100, 70, 30

20

200

Find the Median for the following data: 

50, 10, 20, 20, 100, 70, 30

10, 20, 20, 30, 50, 70, 100

median= middle= 30

300

Find the range for the following data: 

50, 10, 20, 20, 100, 70, 30

Range= big - small 

100- 10= 90

400

Find the mean for the following data: 

50, 10, 20, 20, 100, 70, 30, 20

320/8= 40

500

True or False- 

You can have more than 1 mode

True