Transcript Decimals - World of Teaching

Chapter 1.2
PLACE VALUE WITH
DECIMALS
How do I know what kind of decimal it is?
 The name of a decimal is determined by the number
of places to the right of the decimal point
Number of Places
Decimal Name
Example
1
tenths
0.7
2
hundredths
0.05
3
thousandths
0.016
What are mixed decimals?
 Mixed decimals are numbers with both whole
numbers and decimals
 The name of a whole number is determined by the
number of places to the left of the decimal point

In the number 128.765, 1 is in the hundreds place, 2 is in the
tens place, 8 is in the ones place, 7 is in the tenths place, 6 is
in the hundredths place, and 5 is in the thousandths place
How do you read decimals?
 To read a decimal correctly, first find the decimal
point
 Whole numbers are to the left of the decimal point;
any numbers to the right of a decimal point form a
decimal fraction
 Say “and” for the decimal point

The decimal 2164.511 is read as “two thousand, one hundred
sixty-four and five hundred eleven thousandths”
Zeros after the decimal point
 Writing extra zeros after the decimal point does not
change the value!

The decimals 0.2, 0.20, and 0.200 are equivalent decimals
Practice
HERE ARE SOME PRACTICE PROBLEMS
IN WHICH I WILL WORK THROUGH WITH
Y O U T O M A K E S U R E T H AT Y O U
U N D E R S TA N D T H E M A I N C O N C E P T S
COVERED.
Exercise 1
Write the decimals.
1. Five thousandths
2. Ninety-four thousandths
3. Three hundred thirty-six and sixty-nine hundredths
Exercise 2
Write each decimal in words.
1. 7884.011
2. 5592.4
3. 4.203
4. 612.250
5. 10.44
Exercise 3
In what place (on the place value chart) is the
underlined digit? Write the answer.
1. 1.475
2. 3.763
3. 7780.215
4. 412.407
5. 902.103
Exercise 4
Write a decimal that has the same number.
1. 0.2
2. 5.51
3. 410.6
4. 753.809
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