Math Review

Place Value

100

What is the first place value to the left of the decimal?

Ones 

200

What place value is the 1 in, in the number 210?

tens place

300

The place value that comes after the tens place is the... __________ . 

hundreds

400

The first place value to the right of the decimal is the _____ place. 

tenths place

500

tenths, hundreths, _________.

What place value comes after the hundreths?

thousandths

Decimals

100

2.34

What place value is the 2 in?

Ones Place

200

2.01 = 2.010

True or False

True

300

25.325

Which number is in the tens place?

2

400

Write the fraction 2/10 as a decimal. 

0.2 or .2

500

Write two thousandths in decimal form. 

.002

Numbers with Exponents

100

10² 

^{Which number is the exponent?}

2

200

10⁵

^{Which number is the base?}

10

300

10⁵

^{is the same as saying 10x10x10x10x10}

^{True or False?}

True

400

3x10³

Write in Standard form

3,000

500

5x10³

^{Write in word form and standard form.} 

5,000

Five thousand

Vocab

100

What does equivalent decimals mean?

Decimals that are equal to one another. 

200

What is an exponent?

Represents the number of times the base is used as a factor.

300

Which number is the base and which is the exponent?

10⁸

10 is the base.

8 is the exponent. 

400

Write the number 124 in expanded form. 

100+20+4

(1x100)+(2x10)+(4x1)

500

Write the decimal 9.454 in word form.

Nine and four hundred fifty four thousandths

Comparing Decimals/Rounding Decimals

100

2<8

True or False?

False

200

2.02 = 0.02

True or False?

False

300

2.009   and  3.23

Is 2.009 less than, greater than, or equal to 3.23?

less than

400

0.009   and  0.9

Is 0.009 less than, greater than, or equal to 0.9?

less than

500

.5 and .50

Is .5 less than, greater than, or equal to .50?

equal. These are equivalent decimals