decimals & decimal place value. math vocabulary decimal: a number that names part of a whole...

Decimals & Decimal

Place Value

Math VocabularyDecimal:

A number that names part of a whole

Decimal Point:

The dot in a decimal

Decimal Place:

ALL #s to the right of a decimal point are called

decimal places.

Mixed Decimal:

A number with a whole number, decimal point, and decimal numbers (to the

right of the decimal

Decimal places…

How many decimal places?

0.234 three

1.0008 four

212.2 one

Decimal Place Value

___ . ___ ___ ___ ___ ___ ones tenths hundredths thousandths 10 thousandths 100 thousandths

* When reading/writing decimals we use the letters

“ths” at the end of the place value word to

determine that they are decimal values.

Decimal Place Valuea) Which digit is in the

thousandths’ place … 16.57349

b) Which digit is in the tenths’

place … 0.0123

c) What is the place value of the 9

in 67.89?

d) What is the value of the 5 in

12.3435?

3 thousandths

0 tenths

9 hundredths

5 ten thousandths

Practice…a) How many decimals places in … 16.57349

b) Which digit is in the tenths’ place … 42.526

c) What is the place value of the 4 in 0.000426?

d) How many decimal places in … 4.98?

e) What digit is in the thousandths place … 0.3052