6th Grade Math Textbook, Progress

Place Value

1-1

The digits and the position of each digit in a

number determine the value of a number.

To read the number 7,800,000,000,000,

you need to know the place of each digit.

The place-value chart below will help you.

A set of three digits

separated by a comma

is called a period.

hundredstensones

Billions

Period

hundredstensoneshundredstensoneshundredstensoneshundredstensones

Millions

Period

Thousands

Period

Ones

Period

(^7) , (^800) , (^000) , (^0000) , 00
Trillions
Period
hundredstensonestenthshundredthsthousandthsten thousandthshundred thousandthsmillionths
0 04
0 05
02
4
04 01
0
0
0
0
6
0
Place
The 7 is in the
trillions place. Its
value is 7 trillions, or
7,000,000,000,000.
The 8 is in the
hundred billions
place. Its value is 8
hundred billions, or
800,000,000,000. Standard Form:7,800,000,000,000
Word Name:seven trillion, eight hundred billion
Short Word Name:7 trillion, 800 billion
To read a decimal, read the numbers and say
the place of the last digit to the right.
Word Name
four ten thousandths
six thousand fifty-four hundred thousandths
forty and two hundred one millionths
Standard
Word Name Short Word Name
Form
0.0004 four ten thousandths 4 ten thousandths
0.06054 six thousand fifty-four 6054 hundred thousandths
hundred thousandths
40.000201 forty and two hundred one millionths 40 and 201 millionths
The decimal point is read as “and.”
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