I show you how to add numbers mentally by rounding them up to easy and compatible numbers, then subtracting the excess amount. Mental addition is useful when shopping, or when we just need a quick sum. This video and its contents are the property of JoAnn's School and is protected under U.S. copyright law. To avoid a copyright strike, do not re-upload them or any part of them, to your own channel. Do not reproduce, distribute, transmit, broadcast, display, sell, license, or otherwise exploit any content for any other purposes. FOLLOW ME: YouTube https://www.youtube.com/joannsschool MINDS https://www.Minds.com/joannsschool Odysee https://www.odysee.com/JoAnnsSchool:2 Facebook https://www.facebook.com/JoAnnsSchool/ SUPPORT MY WORK: With a YOUTUBE SUPER THANKS which directly supports my channel or PATREON (monthly) https://www.patreon.com/JoannsSchool TEESPRING (buy stuff) https://teespring.com/stores/joanns-school PAYPAL (one time) https://www.paypal.me/JoAnnsSchool ... https://www.youtube.com/watch?v=WC6JJ72Y4Q4

We can use an inch ruler to measure length to the nearest inch. We line up the left side of the object with the 0 mark on the ruler. Then we find the inch mark that is closest to the other end of the object. For this lesson we will need our color tile rulers from video 8.2 and an inch ruler. Some rulers will have a 0, and some will have a line. The first line IS the 0 mark. We do spatial and abstract reasoning by drawing a one inch rectangle using a ruler. Then without the ruler, we use the 1-inch rectangle as a guide to draw a 2-inch and a 3-inch rectangle. We measure objects to their nearest inch. The longest mark on a ruler shows inches. The medium mark shows half of an inch. The half-inch marks are exactly between the inch marks. We find how much longer one line is than another. We measure the two sides of an angle to find the total measure. 2nd Grade Math 8.1, Measure With Inch Models https://youtu.be/Oh_Re057kas 2nd Grade Math 8.2, Make and Use a Ruler (Using 1 inch color tiles) https://youtu.be/Oi3VpxCBmz8 2nd Grade Math 8.3, Estimate Lengths in Inches https://youtu.be/djC4yknlcuc 2nd Grade Math playlist: https://www.youtube.com/playlist?list=PLKi4WTp6PRGUL-MlUdbT5DeAsigMuQc4o I'm using the Houghton Mifflin Go Math! 2015 copyright textbook for this playlist. You can practice online using the textbook's website https://www.gomathacademy.com/ This video and its contents are the property of JoAnn's School and is protected under U.S. copyright law. FOLLOW ME: TWITTER https://twitter.com/JoannsSchool FACEBOOK https://www.facebook.com/JoAnnsSchool/ MINDS https://www.Minds.com/joannsschool SUPPORT MY WORK: PATREON (monthly) https://www.patreon.com/JoannsSchool PAYPAL (one time) https://www.paypal.me/JoAnnsSchool ... https://www.youtube.com/watch?v=xd5G7Rc82uw

Solving word problems by using the method "Guess and Check". Four example problems are shown. Page 83 in the Silver Burdett Grade 2 textbook. SUPPORT MY WORK: PATREON https://www.patreon.com/JoannsSchool PAYPAL https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=KKAMABTBVDFNY MINDS minds.com/joannsschool If you can't afford to become a monthly patron... click or watch the ads to help me out. FOLLOW ME: YOUTUBE FAN FUNDING on my channel Home page https://www.youtube.com/channel/UCAZKtYcE5Jgd6hVL-RHv6Vw TWITTER https://twitter.com/JoannsSchool FACEBOOK Message me! https://www.facebook.com/JoAnnsSchool/ Grade 2 Math Playlist https://www.youtube.com/playlist?list=PLKi4WTp6PRGXCEjmBCoa1zkw869Y_Xei- ... https://www.youtube.com/watch?v=cuJmERcYmtk

We can use a picture graph to show data as pictures. Data is information that is numbers, words, or both. Each picture stands for a certain amount. The key will tell us how many each picture stands for. A survey is a collection of data from answers to a question. We read the gathered answers as data, and use picture graphs to answer questions. Picture graphs and tally charts make it easier for us to answer comparison questions. We find which has the most, which has the fewest, and we find totals. 2nd Grade Math 10.1, Collect Data, Tally Charts https://youtu.be/jegfse_QoTY 2nd Grade Math Course: https://www.youtube.com/playlist?list=PLKi4WTp6PRGUL-MlUdbT5DeAsigMuQc4o I'm using the Houghton Mifflin Go Math! 2015 copyright textbook for this playlist. You can practice online using the textbook's website https://www.gomathacademy.com/ This video and its contents are the property of JoAnn's School and is protected under U.S. copyright law. FOLLOW ME: TWITTER https://twitter.com/JoannsSchool FACEBOOK https://www.facebook.com/JoAnnsSchool/ MINDS https://www.Minds.com/joannsschool SUPPORT MY WORK: PATREON (monthly) https://www.patreon.com/JoannsSchool PAYPAL (one time) https://www.paypal.me/JoAnnsSchool ... https://www.youtube.com/watch?v=1BHMQFEEnqI