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DECIMAL BASICS. Representing, Comparing, Ordering, and Rounding Decimals. Representing Decimals. thousands. ten-thousandths. thousandths. hundredths. hundreds. tenths. tens. ones. 1. 100. 10. 1000. 0.1. 0.01. 0.001. 0.0001. Write each number in word form. a. 23.108.

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Decimal basics

DECIMAL BASICS

Representing, Comparing, Ordering, and Rounding Decimals


Representing decimals
Representing Decimals

thousands

ten-thousandths

thousandths

hundredths

hundreds

tenths

tens

ones

1

100

10

1000

0.1

0.01

0.001

0.0001


Write each number in word form
Write each number in word form.

a. 23.108

Twenty-three andone hundred eightthousandths

and represents the decimal

number behind the decimal

last digit’s place value


Write each number in word form1
Write each number in word form.

b. 1024.06

One thousand twenty-four and six hundredths


Standard form
Standard Form

Standard form is the usual way to

write a number.


Write each number in standard form
Write each number in standard form.

a. Seventy-six and one hundred three thousandths

b. Fifty-nine and sixty-two thousandths

c. Eight thousandths

d. Three and four hundredths

76.103

59.062

0.008

3.04


Comparing and ordering decimals
COMPARING AND ORDERING DECIMALS

  • Line up the numbers by _________________.

  • Starting at the ______ and find the first place the digits are __________.

  • Compare the different digits.

the decimal points

left

different


Use or to compare the following numbers
Use <, >, or = to compare the following numbers.

  • 0.594 _____ 0.562

>

0.594

0.562


Use or to compare the following numbers1
Use <, >, or = to compare the following numbers.

  • 29.64 _____ 29.84

  • 1.202 _____ 1.2020

<

=


Ordering numbers from least to greatest
Ordering Numbers from Least to Greatest

  • Order 25, 25.1, 24.36, 25.03 from least to greatest.

Line up the numbers!

25

25.1

24.36

25.03


Ordering numbers from greatest to least
Ordering Numbers from Greatest to Least

Order 71, 71.04, 70.89, and 71.4 from greatest to least

71.4, 71.04, 71, 70.89


Rounding decimals
ROUNDING DECIMALS

Underline

  • ____________ the digit to be rounded.

  • Look at the __________________

    • _____ or greater – round up one

    • _____ or less – stays the same

  • Keep all the digits in front the _______ and all those behind dropped or turn to _______.

digit to the right

5

4

same

zero


Round each decimal
Round Each Decimal

  • 7.601; ones

7.601

8


Round each decimal1
Round Each Decimal

2) 68.94; tenths

3) $13.75; nearest dollar

4) $2.1493; nearest cent

5) 1919.9199; thousandths

68.9

$14

$2.15

1919.920


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