Math Review #1

Exponents

100

What does 10⁵  equal? 

100,000

200

What does 10⁸ equal? 

100,000,000

300

What is 1 x 10² equal? 

100

400

What is 5 x 10⁴

50,000

500

What is 7 x 10⁹

7,000,000,000

Decimal Place Value

100

What is the place value of the 3 in 2.3? 

Tenths 

200

What is the place value of the 2's in 2.22

Ones, tenths, hundreths 

300

Write a number, a 4 has to be in the hundreths place

Any number! 

400

What is the value of the 5's in 3.455

Hundreths and thounsandths 

500

What is the place value of the 4 in 45.567

Ten 

Rounding Decimals

100

Round the two in 3.24

3.2

200

Round the 9 in 4.598

4.60

300

Round the 5 in 4.758

4.76

400

Round the 1 in 1.23

1

500

Round the 8 in 4.876

4.9

Expanded Form

100

Write 25 in expanded form 

20+5

200

Write 7,550 in expanded form 

7,000+500+50

300

Write 550,000 in expanded form WITH exponents

5x10⁵+5x10⁴

400

Write 5.6 in expanded form

(5x1)+(6x1/10)

500

Write 6.789 in expanded form. 

(6x1)+(7x1/10)+(8x1/100)+(9x1/1000)

Comparing Decimals

100

Decide which one is greater. 3.45 or 3.54

3.54

200

Which one is greater? 2.5 or 2.500

They are equal 

300

Put these in order from least to greatest 

2.54, 3.56, 2.55

2.54,2.55,3.56

400

Which one is greater

3 or 3.1

3.1

500

Put these in order from greatest to least greatest

4.5, 4.8, 3.2, 1.6, 7.2

7.2, 4.8, 4.5, 3.2, 1.6