Estimating adding large numbers by rounding ... https://www.youtube.com/watch?v=CZuYBGBClG0 Note: All Khan Academy content is available for free at (www.khanacademy.org)

In this second video giving an overview of World War II, we see Germany and the Axis powers only continue to gain momentum in 1940. Watch the next lesson: https://www.khanacademy.org/humanities/world-history/euro-hist/wo/v/1941-axis-momentum-accelerates-in-ww2?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory Missed the previous lesson? https://www.khanacademy.org/humanities/world-history/euro-hist/wo/v/beginning-of-world-war-ii?utm_source=YT&utm_medium=Desc&utm_campaign=worldhistory World history on Khan Academy: From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. ... https://www.youtube.com/watch?v=Toss6Hzf5n0 Note: All Khan Academy content is available for free at (www.khanacademy.org)

Learn how to check whether an ordered pair is a solution of a two-variable linear inequality, both graphically and algebraically. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-variable-linear-inequalities/checking-solutions-of-inequalities/e/checking-solutions-to-two-var-inequalities?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Watch the next lesson: https://www.khanacademy.org/math/algebra/two-variable-linear-inequalities/checking-solutions-of-inequalities/v/testing-solutions-for-a-system-of-inequalities?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? https://www.khanacademy.org/math/algebra/systems-of-linear-equations/systems_of_linear_equations_word_problems/v/understanding-systems-of-equations-example?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI ... https://www.youtube.com/watch?v=2oGsLdAWxlk Note: All Khan Academy content is available for free at (www.khanacademy.org)

Learn how to create a box plot. The data set used in this example has 11 data points. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-box-whisker-plots/e/creating_box_and_whisker_plots?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Watch the next lesson: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-box-whisker-plots/v/another-example-constructing-box-plot?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-box-whisker-plots/v/constructing-a-box-and-whisker-plot?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade Grade 6th on Khan Academy: By the 6th grade, you're becoming a sophisticated mathemagician. You'll be able to add, subtract, multiply, and divide any non-negative numbers (including decimals and fractions) that any grumpy ogre throws at you. Mind-blowing ideas like exponents (you saw these briefly in the 5th grade), ratios, percents, negative numbers, and variable expressions will start being in your comfort zone. Most importantly, the algebraic side of mathematics is a whole new kind of fun! And if that is not enough, we are going to continue with our understanding of ideas like the coordinate plane (from 5th grade) and area while beginning to derive meaning from data! (Content was selected for this grade level based on a typical curriculum in the United States.) ... https://www.youtube.com/watch?v=m6xURMj2ztk Note: All Khan Academy content is available for free at (www.khanacademy.org)