We have learned that on a horizontal number line, the positive direction is to the right and the negative directions to the left. On a vertical number line, the positive is up, and the negative is down. We can use subtraction of a positive number to represent a decrease. To subtract a positive rational number on a number line, we start at a point for the first number (minuend) and draw an arrow moving in the negative direction for the second number (subtrahend), to the left. Adding a negative is the same as subtracting a positive. We show examples of using a number line to find the difference for subtracting a positive number. We show how we can draw our number line to fit the equation. We review how the Commutative Property does not work for subtraction.<br /><br />7th Grade Math Course<br /><a href="https://www.youtube.com/playlist?list=PLKi4WTp6PRGWxBDwfqly2mFnLNfpAU8UV" target="_blank" rel="nofollow">https://www.youtube.com/playlist?list=PLKi4WTp6PRGWxBDwfqly2mFnLNfpAU8UV</a><br /><br />This video and its contents are the property of JoAnn's School and <br />is protected under U.S. copyright law. To avoid a copyright strike from YouTube, <br />do not re-upload them, or any part of them, to your own channel. Do not reproduce, <br />distribute, transmit, broadcast, display, sell, license, or otherwise exploit any <br />content for any other purposes.<br /><br />FOLLOW ME:<br />YouTube <a href="https://www.youtube.com/joannsschool" target="_blank" rel="nofollow">https://www.youtube.com/joannsschool</a><br />FACEBOOK <a href="https://www.facebook.com/JoAnnsSchool/" target="_blank" rel="nofollow">https://www.facebook.com/JoAnnsSchool/</a><br />TWITTER <a href="https://twitter.com/JoannsSchool" target="_blank" rel="nofollow">https://twitter.com/JoannsSchool</a><br />MINDS <a href="https://www.Minds.com/joannsschool" target="_blank" rel="nofollow">https://www.Minds.com/joannsschool</a><br /><br />SUPPORT MY WORK:<br />PATREON (monthly) <a href="https://www.patreon.com/JoannsSchool" target="_blank" rel="nofollow">https://www.patreon.com/JoannsSchool</a><br />PAYPAL (one time) <a href="https://www.paypal.me/JoAnnsSchool" target="_blank" rel="nofollow">https://www.paypal.me/JoAnnsSchool</a><br />TEESPRING (buy stuff) <a href="https://teespring.com/stores/joanns-school" target="_blank" rel="nofollow">https://teespring.com/stores/joanns-school</a><br /><br />Textbook: Go Math! Student Interactive Worktext Grade 7 2018 Student Edition<br />Publisher: HOUGHTON MIFFLIN HARCOURT; Student edition (April 14, 2017) <br />Language: English<br />2018 copyright<br />ISBN-13: 978-1-328-76109-5<br />ISBN-10: 1328761096<br />Item Weight: 2.4 pounds<br />Paperback: 560 pages<br />ISBN-13: 978-1328761095<br />Product dimensions: 8.5 x 1.07 x 1.12 inches<br />Reading level: 12 - 13 years<br />...<br /><a href="https://www.youtube.com/watch?v=_j9HpRrPuGg" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=_j9HpRrPuGg</a>