Lesson 3-3 Ideas/Vocabulary Round decimals.

Round Decimals Lesson 3-3 Key Concept 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.

Lesson 3-3 Example 1 Round to the nearest whole number. Round Decimals 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 On the number line, is closer to 8.0 than 7.0. Answer: To the nearest whole number, rounds to 8.

Round to the nearest whole number. A.2 B.3 C.4 D.5

Lesson 3-3 Example 2 Round to the nearest tenth. Answer: To the nearest tenth, rounds to Round Decimals 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 On the number line, is closer to 68.9 than 69.0.

Round to the nearest tenth A B C D.125.8

Lesson 3-3 Example 3 BEANS A can of black beans costs $ 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. $ 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. $ There are 100 cents in a dollar. So, rounding to the nearest cent means to round to the nearest hundredth. Round Decimals

CEREAL The price per ounce for a box of cereal is shown as $ 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