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3-1 Representing, Comparing, and Ordering Decimals Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day.

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Presentation on theme: "3-1 Representing, Comparing, and Ordering Decimals Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day."— Presentation transcript:

1 3-1 Representing, Comparing, and Ordering Decimals Course 1 Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes

2 3-1 Representing, Comparing, and Ordering Decimals Warm Up Order the numbers from least to greatest , 156, 224, , 148, 914, 814, , 376, 354, , 165, 224, , 721, 814, 914, , 354, 376, 397

3 3-1 Representing, Comparing, and Ordering Decimals Problem of the Day Lupe is taller than Reba and shorter than Miguel. Tory is shorter than Lupe but taller than Reba. List the four brothers and sisters in order from tallest to shortest. Miguel, Lupe, Tory, Reba

4 3-1 Representing, Comparing, and Ordering Decimals Learn to write, compare, and order decimals using place value and number lines.

5 3-1 Representing, Comparing, and Ordering Decimals Place value can help you understand and write and compare decimal numbers.

6 3-1 Representing, Comparing, and Ordering Decimals Additional Example 1: Reading and Writing Decimals Write each decimal in standard form, expanded form, and words. A B Expanded form: one and seven hundredths Word form: Standard form: three hundred sixty-nine ten-thousandths Word form:

7 3-1 Representing, Comparing, and Ordering Decimals Additional Example 1: Reading and Writing Decimals Write the decimal in standard form and expanded form. C. fourteen and eight hundredths Standard form: Expanded form:

8 3-1 Representing, Comparing, and Ordering Decimals Check It Out: Example 1 Write each decimal in standard form, expanded form, and words. A B Expanded form: one and twelve hundredths Word form: Standard form: six thousand eighty-seven ten-thousandths Word form:

9 3-1 Representing, Comparing, and Ordering Decimals Check It Out: Example 1 Write each decimal in standard form and expanded form. C. eleven and two hundredths Standard form: Expanded form:

10 3-1 Representing, Comparing, and Ordering Decimals Additional Example 2: Earth Science Application The star Wolf 359 has an apparent magnitude of Suppose another star has an apparent magnitude of Which star has the smaller magnitude? Line up the decimal points. Start from the left and compare the digits Look for the first place where the digits are different. 0 is less than < The star that has an apparent magnitude of has the smaller magnitude.

11 3-1 Representing, Comparing, and Ordering Decimals Check It Out: Example 2 Tina reported on a star for her science project that has a magnitude of Maven reported on another star that has a magnitude of Which star has the smaller magnitude? Line up the decimal points. Start from the left and compare the digits Look for the first place where the digits are different. 0 is less than < The star that has a magnitude of has the smaller magnitude.

12 3-1 Representing, Comparing, and Ordering Decimals Additional Example 3: Comparing and Ordering Decimals Order the decimals from least to greatest , 16.6, Compare two of the numbers at a time. Write 16.6 as < Start at the left and compare the digits < Look for the first place where the digits are different < 16.60

13 3-1 Representing, Comparing, and Ordering Decimals Additional Example 3 Continued Graph the numbers on a number line The numbers are ordered when you read the number line from left to right. The numbers in order from least to greatest are 16.07, 16.6, and

14 3-1 Representing, Comparing, and Ordering Decimals Check It Out: Example 3 Order the decimals from least to greatest , 12.4, Compare two of the numbers at a time. Write 12.4 as < Start at the left and compare the digits < Look for the first place where the digits are different < 12.40

15 3-1 Representing, Comparing, and Ordering Decimals Check It Out: Example 3 Continued Graph the numbers on a number line The numbers are ordered when you read the number line from left to right. The numbers in order from least to greatest are 12.02, 12.4, and

16 3-1 Representing, Comparing, and Ordering Decimals Standard Lesson Quiz Lesson Quizzes Lesson Quiz for Student Response Systems

17 3-1 Representing, Comparing, and Ordering Decimals Lesson Quiz: Part I Write each in standard form, expanded form and words eight and twelve hundredths ; eighteen and three hundred six thousandths ; eight and three hundred forty-two ten thousandths 8.12;

18 3-1 Representing, Comparing, and Ordering Decimals Lesson Quiz: Part II 4. It takes Pluto years to orbit the Sun, and it takes Neptune years. Which takes longer to orbit the Sun? 5. Order the decimals from least to greatest: 16.35, 16.3, Pluto 16.3, 16.35, 16.5

19 3-1 Representing, Comparing, and Ordering Decimals 1. Which of the following represents in the expanded form and words? A ; three and seven hundred twenty-seven thousandths B ; three and seven hundred twenty-seven thousandths C ; three and seven hundred twenty-seven ten-thousandths D ; three and seven hundred twenty-seven ten-thousandths Lesson Quiz for Student Response Systems

20 3-1 Representing, Comparing, and Ordering Decimals 2. Which of the following represents in the standard form and words? A ; twenty-five and nine hundred seven thousandths B ; twenty-five and nine hundred seven hundredths C ; twenty-five and ninety seven hundredths D ; twenty-five and nine hundred seven thousandths Lesson Quiz for Student Response Systems

21 3-1 Representing, Comparing, and Ordering Decimals 3. Which of the following represents twenty-three and six hundredths in the standard form and expanded form? A ; B ; C ; D ; Lesson Quiz for Student Response Systems

22 3-1 Representing, Comparing, and Ordering Decimals 4. The atomic weight of Gallium is , Germanium is 72.64, Copper is and Zinc is Which element has the highest atomic weight? A. Gallium B. Germanium C. Copper D. Zinc Lesson Quiz for Student Response Systems

23 3-1 Representing, Comparing, and Ordering Decimals 5. Which of the following represents the given decimals ordered from least to greatest? 13.52, 13.3, A , 13.3, B , 13.08, 13.3 C. 13.3, 13.08, D. 13.3, 13.52, Lesson Quiz for Student Response Systems


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