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Reading & Writing Decimals. . TenthsOnes Decimal.1 Lets take a look at the places and the values of decimals. 1 Tens 10 Hundredths.01.001 Thousandths.

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Presentation on theme: "Reading & Writing Decimals. . TenthsOnes Decimal.1 Lets take a look at the places and the values of decimals. 1 Tens 10 Hundredths.01.001 Thousandths."— Presentation transcript:

1 Reading & Writing Decimals

2 . TenthsOnes Decimal.1 Lets take a look at the places and the values of decimals. 1 Tens 10 Hundredths Thousandths Decimal Place Values

3 Reading & Writing Decimals 1. Say or write the number before the decimal point. 2. Say or write “ and ” when you get to the decimal point. 3. Say or write the number after the decimal point. 4. Say or write the name of the place that the decimal ends in. (tenths, hundredths, thousandths)

4 Example 8, Eight thousand, two hundred forty-three “and”sixty-sevenhundredths

5 Lets Practice:   16.3  4,  63, two hundred forty-seven andseventeen thousandths. sixteen andthree tenths Four thousand, seven hundred sixty-four andfifty-two hundredths Sixty-three thousand, nine hundred twenty and one hundred forty-three hundredths

6 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 as far to the right as possible with your number, then use zeroes to fill any empty spaces.

7 Example: Write the following number in standard form: two hundred six and five thousandths 206. The word “thousandths” indicates that we need three decimal places. __ __ __ 5 0 When we clean it up, the answer is

8 Lets Practice:  Six hundred fifty-three and twenty-three hundredths  Fourteen and five tenths  Three thousand, nine hundred thirty-five and sixty-one thousandths ,

9 Expanded Form  Write the number that appears before the decimal point in expanded form.  For numbers that are decimals only, 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.

10 Example: Write in expanded form. Remember, deal with the number before the decimal first Then, do the decimal part

11 Lets Practice:   16.3  4, ,

12 Lets Practice: , ,


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