1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 3–2) Main Idea Key Concept: Round Decimals Example 1:Round Decimals Example 2:Round Decimals Example 3:Round Decimals

3. Main Idea/Vocabulary Round decimals.

4. Key Concept Round Decimals If the digit is 4 or less, the underlined digit remains the same. If the digit is 5 or greater, add 1 to the underlined digit. After rounding, drop all digits after the underlined digit. To round a decimal, first underline the digit to be rounded. Then look at the digit to the right of the place being rounded.

5. Example 1 Round 7.601 to the nearest whole number. Round Decimals 7.601 Then look at the digit to the right. Since 6 is greater than 5, add one to the underlined digit. Underline the digit to be rounded. In this case, the digit is in the ones place. 7.601 On the number line, 7.601 is closer to 8.0 than 7.0. Answer: To the nearest whole number, 7.601 rounds to 8.

6. 1.A 2.B 3.C 4.D Example 1 Round 4.321 to the nearest whole number. A.2 B.3 C.4 D.5

7. Example 2 Round 68.94 to the nearest tenth. Answer: To the nearest tenth, 68.94 rounds to 68.9. Round Decimals 68.94 Then look at the digit to the right. Since 4 is less than 5, the digit 9 stays the same. Underline the digit to be rounded. In this case, the digit is in the tenths place. 68.94 On the number line, 68.94 is closer to 68.9 than 69.0.

8. 1.A 2.B 3.C 4.D Example 2 Round 125.38 to the nearest tenth. A.125.0 B.125.3 C.125.4 D.125.8

9. Example 3 BEANS A can of black beans costs $0.0726 per ounce. To the nearest cent, how much does an ounce of beans cost? Answer: To the nearest cent, an ounce of beans costs $0.07. $0.0726 Then look at the digit to the right. Since 2 is less than 5, the digit 7 stays the same. Underline the digit in the hundredths place. $0.0726 There are 100 cents in a dollar. So, rounding to the nearest cent means to round to the nearest hundredth. Round Decimals

10. 1.A 2.B 3.C 4.D Example 3 CEREAL The price per ounce for a box of cereal is shown as $0.1275 on the tag in the grocery store. How much is this to the nearest cent? A.$0.10 B.$0.20 C.$0.12 D.$0.13

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12. Resources Five-Minute Check (over Lesson 3–2) Image Bank Math Tools Modeling Decimals Dividing Decimals Modeling Decimals

13. 1.A 2.B 3.C Five Minute Check 1 Use, or = to compare 4.506 and 4.560. (over Lesson 3-2) A.4.506 < 4.560 B.4.506 > 4.560 C.4.506 = 4.560

14. 1.A 2.B 3.C Five Minute Check 2 Use, or = to compare 9.0301 and 9.030100. (over Lesson 3-2) A.9.0301 < 9.030100 B.9.0301 > 9.030100 C.9.0301 = 9.030100

15. 1.A 2.B 3.C 4.D Five Minute Check 3 Order the set of decimals from greatest to least. 2.73, 3.72, 2.37, 2.703 A.2.37, 2.703, 2.73, 3.72 B.3.72, 2.73, 2.703, 2.37 C.3.72, 2.703, 2.73, 2.37 D.3.72, 2.73, 2.37, 2.703 (over Lesson 3-2)

16. 1.A 2.B 3.C 4.D Five Minute Check 4 Order the set of decimals from greatest to least. 0.927, 0.638, 0.374, 0.774, 0.635 A.0.374, 0.635, 0.638, 0.774, 0.927 B.0.374, 0.638, 0.635, 0.774, 0.927 C.0.927, 0.774, 0.635, 0.638, 0.374 D.0.927, 0.774, 0.638, 0.635, 0.374 (over Lesson 3-2)

17. 1.A 2.B 3.C 4.D Five Minute Check 5 Tia worked 4.5 hours on Monday, 4.25 hours on Wednesday, and 4.75 hours on Friday. On which day did she work the least number of hours? On which day did she work the greatest number of hours? (over Lesson 3-2) A.She worked the least number of hours on Monday and the greatest number on Friday. B.She worked the least number of hours on Friday and the greatest number on Wednesday. C.She worked the least number of hours on Wednesday and the greatest number on Friday. D.She worked the least number of hours on Wednesday and the greatest number on Monday.

18. 1.A 2.B 3.C 4.D Five Minute Check 5 Which statement about the decimal 9.021 is true? A.9.086 < 9.021 B.9.21 = 9.021 C.9.021 < 9.001 D.9.021 < 9.19 (over Lesson 3-2)

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