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# DECIMAL BASICS - PowerPoint PPT Presentation

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

Representing, Comparing, Ordering, and Rounding Decimals

thousands

ten-thousandths

thousandths

hundredths

hundreds

tenths

tens

ones

1

100

10

1000

0.1

0.01

0.001

0.0001

a. 23.108

Twenty-three andone hundred eightthousandths

and represents the decimal

number behind the decimal

last digit’s place value

b. 1024.06

One thousand twenty-four and six hundredths

Standard form is the usual way to

write a number.

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

• 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

• 0.594 _____ 0.562

>

0.594

0.562

• 29.64 _____ 29.84

• 1.202 _____ 1.2020

<

=

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

Line up the numbers!

25

25.1

24.36

25.03

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

71.4, 71.04, 71, 70.89

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

• 7.601; ones

7.601

8

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