9 Mental Math Tricks Math can be terrifying for many people. This list will hopefully improve your general knowledge of mathematical tricks and your speed when you need to do math in your head. 1. Multiplying by 9, or 99, or 999 Multiplying by 9 is really multiplying by 10-1. So, 9×9 is just 9x(10-1) which is 9×10-9 which is 90-9 or 81. Let’s try a harder example: 46×9 = 46×10-46 = 460-46 = 414. One more example: 68×9 = 680-68 = 612. To multiply by 99, you multiply by 100-1. So, 46×99 = 46x(100-1) = 4600-46 = 4554. Multiplying by 999 is similar to multiplying by 9 and by 99. 38×999 = 38x(1000-1) = 38000-38 = 37962. 2. To multiply a number by 11 you add pairs of numbers next to each other, except for the numbers on the edges. Let me illustrate: To multiply 436 by 11 go from right to left. First write down the 6 then add 6 to its neighbor on the left, 3, to get 9. Write down 9 to the left of 6. Then add 4 to 3 to get 7. Then, write down the leftmost digit, 4. So, 436×11 = is 4796. Let’s do another example: 3254×11. 3. 4. 5.
NBC Learn and Carnegie Learning, Inc. announced today that they are teaming up to produce "Decision 2012: Election Math" – a collection of free online math education resources related to the 2012 election season. Posted on 04/30/2012 12:09 PM NBC Learn, the educational arm of NBC News, and Carnegie Learning, Inc., a leader in research-based math programs for middle school, high school, and post-secondary students, today announced they are teaming up to produce "Decision 2012: Election Math" – a collection of free online math education resources related to the 2012 election season and developed especially for middle and high school teachers and students. "Decision 2012: Election Math" will appear as a Free Resources Special Collection with streaming videos on www.nbclearn.com and linked to interactive math problems on www.carnegielearning.com, beginning in Summer 2012. For full coverage, visit PR Newswire.
Welcome Foldables/Study Guides Lose a foldable? All foldables & study guides that we have made in class are available below. If you need help filling in the blanks, please see the completed foldable or study guide in the classroom. 6th Grade Adding and Subtracting Fractions and Mixed Numbers (PDF 11 KB)Four-door foldable for operations with fractions. 6th Grade Multiplying and Dividing Fractions and Mixed Numbers (PDF 12 KB)Four-door foldable for operations with fractions. 6th Grade Decimals Foldable (PDF 43 KB)Four-door foldable for decimal operations 6th Grade Ratio, Rates, and Proportions (PDF 46 KB)This foldable gives definitions and examples of ratios, rates, and proportions. 6th Grade Proportions (PDF 32 KB)This foldable shows the steps needed to solve a proportion. 6th Grade Percents (PDF 70 KB)This tabbed-book is a great overview of percents. 6th Grade Discount and Sale Price (PDF 54 KB)Print this foldable, then make a double-sided master Algebra Vocab (PDF 21 KB)Includes definitions and examples of some key words
A List of Great Free Math Websites for Teachers and Students This is the third post in a series of posts covering a wide spectrum of free resources on different subject areas. After reviewing Social Studies and Science resources , today we are providing you with a list of some of the best free Math websites where you can have access to a plethora of Math lesson plans, free printables, games, activities, video tutorials and many more. Check out the list below and share with us your suggestions : 1- PBS Teachers Math PBS Teachers Math provides some great Math resources organized into different grade-subject pages. 2- Education World Education World presents a variety of math resources that all teachers can use to liven up instruction. 3- SuperKids Math This is a website that provides a wide variety of math drill worksheets. 4- Teachnology This is a section in Teachnology that features over 2.000 free math printables that range in skill from grades k-12. 5- National Council of Teachers of Mathematics 6- Plus Magazine 7- Math Central 8- Simpsons Math
MathConnections - home Educational Games Online - Free Games from The Problem Site Guess the two-digit number Discover the answer to a probability question Math problems and brainteasers Solve the riddles to find the treasure Math Games - from Mangahigh Symbolab - Symbolab Science & Math Search Engine Patterns in Nature - The Hexagon - Natureglo's Art and Science eCenter <div class="deployment_message_block"><span> Hi, You need to enable javascript on your browser to use TpT. <a href=" target="_blank">See how this improves your TpT experience</a>. </span></div> ABOUT US | BLOG | FAQs & HELP Not a member? Your shopping cart is empty Patterns in Nature - The Hexagon 226 Downloads Subjects Geometry Grade Levels 4th, 6th, 10th, 12th, Adult Education Resource Types PowerPoint Presentations Product Rating Compressed Zip File Be sure that you have an application to open this file type before downloading and/or purchasing. This 11-slide PowerPoint and 8-page activity guide introduces nature's hexagons. Total Pages Answer Key Teaching Duration Report Copyright Infringement Average Ratings Overall Quality: Accuracy: Practicality: Thoroughness: Creativity: Clarity: Total: 2 ratings Comments & Ratings On December 15, 2013, Green Grubs Garden Club (TpT Seller) said: Mark as helpful
Celebrate Pi Day: Seven Classroom Resources for Pi Learning Happy 3.14159265358979323846264 Day! That's right, Pi Day is coming on 3/14, and the annual celebration offers a great opportunity for students to explore Pi! (It's also Albert Einstein's birthday. Here are a few of our favorites from around the Web, starting first with the video, "Learn about Pi with Max and Morty," which was produced by Apperson Prep. Pi Day Activities from the San Francisco Exploratorium: Without the Exploratorium, we might never have had an official Pi Day celebration.
Common Core and Educational Technology: Mathematics Awareness Month - APRIL; amazing resource list here!!! I just received an email from our Open Educational Resources friends at Curriki, and I found out that April is Math Awareness Month. This year's theme is the "Mathematics of Sustainability" On the Curriki page you will find a good list of several resources. In particular, I want to focus you on the Mathematics Awareness Month website, where there is an unbelievable list of resources to use. The Mathematics Awareness Month Website also has - on the homepage - some interesting posters and 'essays,' which also speak to how much of our world resources are interconnected. CC Connection: You will find just about everything you need to support any math standard imaginable on the resources page identified above!.
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