{"id":6988,"date":"2017-05-25T16:58:07","date_gmt":"2017-05-25T16:58:07","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/prealgebra\/?post_type=chapter&p=6988"},"modified":"2021-05-21T20:59:43","modified_gmt":"2021-05-21T20:59:43","slug":"introduction-to-decimals","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/cpcc-algebra-trig-I-support\/chapter\/introduction-to-decimals\/","title":{"raw":"Introduction to Writing and Identifying Characteristics of Decimals","rendered":"Introduction to Writing and Identifying Characteristics of Decimals"},"content":{"raw":"

What you'll learn to do: Write and identify characteristics of decimals<\/h2>\r\n[caption id=\"\" align=\"aligncenter\" width=\"975\"]\"A The price of a gallon of gasoline is written as a decimal number.[\/caption]\r\n\r\nGasoline prices change all the time. They might go down for a period of time, but then they usually rise again. One thing that stays the same is that the price is not usually a whole number. Instead, it is shown using a decimal point to describe the cost in dollars and cents. We use decimal numbers all the time, especially when dealing with money. In this section, we'll explore decimal numbers and how to perform operations using them.\r\n\r\nBefore you get started, take this readiness quiz.\r\n
\r\n

readiness quiz<\/h3>\r\n1)\r\n\r\nName the number [latex]4,926,015[\/latex] in words.\r\n\r\n[reveal-answer q=\"623838\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"623838\"]\r\n\r\nfour million, nine hundred twenty-six thousand, fifteen\r\n\r\n[\/hidden-answer]\r\n\r\nIf you missed this problem, review the following example.\r\n
\r\n\r\nName the number\u00a0[latex]8,165,432,098,710[\/latex] in words.\r\n\r\n[reveal-answer q=\"904733\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"904733\"]\r\n\r\nSolution\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Begin with the leftmost digit, which is [latex]8[\/latex]. It is in the trillions place.<\/td>\r\neight trillion<\/td>\r\n<\/tr>\r\n
The next period to the right is billions.<\/td>\r\none hundred sixty-five billion<\/td>\r\n<\/tr>\r\n
The next period to the right is millions.<\/td>\r\nfour hundred thirty-two million<\/td>\r\n<\/tr>\r\n
The next period to the right is thousands.<\/td>\r\nninety-eight thousand<\/td>\r\n<\/tr>\r\n
The rightmost period shows the ones.<\/td>\r\nseven hundred ten<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n\"An\r\nPutting all of the words together, we write [latex]8,165,432,098,710[\/latex]\u00a0as eight trillion, one hundred sixty-five billion, four hundred thirty-two million, ninety-eight thousand, seven hundred ten.\r\n\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\n2)\r\n\r\nRound [latex]748[\/latex] to the nearest ten.\r\n\r\n[reveal-answer q=\"660856\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"660856\"]\r\n\r\n[latex]750[\/latex]\r\n\r\n[\/hidden-answer]\r\n\r\nIf you missed this problem, review this video.\r\n\r\nhttps:\/\/youtu.be\/tpFCYyTi1hc\r\n\r\n3)\r\n\r\n[ohm_question]146007[\/ohm_question]\r\n\r\nIf you missed this problem, review the video below.\r\n\r\nhttps:\/\/youtu.be\/EIdmdTRQWTE\r\n\r\n<\/div>\r\n

Contribute!<\/h2>
Did you have an idea for improving this content? We\u2019d love your input.<\/div>Improve this page<\/a>Learn More<\/a>","rendered":"

What you’ll learn to do: Write and identify characteristics of decimals<\/h2>\n
\"A<\/p>\n

The price of a gallon of gasoline is written as a decimal number.<\/p>\n<\/div>\n

Gasoline prices change all the time. They might go down for a period of time, but then they usually rise again. One thing that stays the same is that the price is not usually a whole number. Instead, it is shown using a decimal point to describe the cost in dollars and cents. We use decimal numbers all the time, especially when dealing with money. In this section, we’ll explore decimal numbers and how to perform operations using them.<\/p>\n

Before you get started, take this readiness quiz.<\/p>\n

\n

readiness quiz<\/h3>\n

1)<\/p>\n

Name the number [latex]4,926,015[\/latex] in words.<\/p>\n

Show Solution<\/span><\/p>\n
\n

four million, nine hundred twenty-six thousand, fifteen<\/p>\n<\/div>\n<\/div>\n

If you missed this problem, review the following example.<\/p>\n

\n

Name the number\u00a0[latex]8,165,432,098,710[\/latex] in words.<\/p>\n

Show Solution<\/span><\/p>\n
\n

Solution<\/p>\n\n\n\n\n\n\n\n
Begin with the leftmost digit, which is [latex]8[\/latex]. It is in the trillions place.<\/td>\neight trillion<\/td>\n<\/tr>\n
The next period to the right is billions.<\/td>\none hundred sixty-five billion<\/td>\n<\/tr>\n
The next period to the right is millions.<\/td>\nfour hundred thirty-two million<\/td>\n<\/tr>\n
The next period to the right is thousands.<\/td>\nninety-eight thousand<\/td>\n<\/tr>\n
The rightmost period shows the ones.<\/td>\nseven hundred ten<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"An
\nPutting all of the words together, we write [latex]8,165,432,098,710[\/latex]\u00a0as eight trillion, one hundred sixty-five billion, four hundred thirty-two million, ninety-eight thousand, seven hundred ten.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

2)<\/p>\n

Round [latex]748[\/latex] to the nearest ten.<\/p>\n

Show Solution<\/span><\/p>\n
\n

[latex]750[\/latex]<\/p>\n<\/div>\n<\/div>\n

If you missed this problem, review this video.<\/p>\n