Lesson 1-2. Read the number before the decimal point. Say “ and ” when you get to the decimal....
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Transcript of Lesson 1-2. Read the number before the decimal point. Say “ and ” when you get to the decimal....
READING AND WRITING DECIMALSLesson 1-2
READING DECIMALS
Read the number before the decimal point.
Say “and” when you get to the decimal. Read the number after the decimal. Say the name of the place that the
decimal ends in.
EXAMPLE
8,243.67Eight thousand, two hundred forty-three
and sixty-seven hundredths
EXPANDED FORM
Write the number that appears before the decimal point in expanded form.
For decimals, place a zero in the ones place.
Also, substitute zeroes for all spaces after the decimal point that come before the digit that you are working with.
EXAMPLE: WRITE 13.361 IN EXPANDED FORM.
Remember, deal with the number before the decimal first.
10 + 3Then, do the decimal part.
0.060.3 ++ + 0.001
FROM WORDS TO STANDARD FORM
Read everything that comes before the word “and.” Write that number down.
Place a decimal point at the word “and.” Read the last word of the sentence to see
how many decimal places you need. Fill in the decimal places with your number.
Fill in as far to the right as possible, and use zeroes to fill any empty spaces.
EXAMPLE: WRITE THE FOLLOWING NUMBER IN STANDARD FORM:
TWO HUNDRED SIX AND FIFTY-FOUR TEN-THOUSANDTHS
206.The word “ten-thousandths” indicates that we need four decimal places.
__ __ __ __5 40 0
When we clean it up, the answer is 206.0054
CLASSWORKTRY THIS: DECIMALS OF THE CARIBBEAN AN INTERACTIVE GAME THAT MATCHES WORD AND NUMERALS WRITTEN IN DECIMAL FORMS!
HOMEWORK TIME!P.10 1- 37 ODD