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  1. Basic Addition | Arithmetic (video) | Khan Academy

    Let's learn about basic addition by starting with simple examples and moving on to more difficult problems. Two methods for solving these problems are demonstrated: drawing circles to represent …

  2. Khan Academy | Khan Academy

    Oops. Something went wrong. Please try again. Uh oh, it looks like we ran into an error. You need to refresh. If this problem persists, tell us.

  3. Addition and Subtraction | Arithmetic | Khan Academy

    In this topic, we will add and subtract whole numbers. The topic starts with 1+1=2 and goes through adding and subtracting within 1000. We will cover regrouping, borrowing, and word problems.

  4. Addition and subtraction within 20 - Khan Academy

    Math can be a blast! In this unit, you'll learn about adding and subtracting numbers up to 20. That might sound tricky, but you'll have all the tools to help you out. Place value blocks, ten frames, arrays, and …

  5. Add and subtract fractions | 5th grade math | Khan Academy

    Learn to add, subtract, multiply, and divide fractions with engaging lessons and practice exercises for 5th-grade students.

  6. Adding decimals: 9.087+15.31 (video) | Khan Academy

    And now we are ready to add. It's a good idea to start with the smallest place value, so if you have any extra at a certain place, you can bring something into the next place value.

  7. Inequalities using addition and subtraction - Khan Academy

    You could also do your adding or subtracting below the line, like this. So if I subtract 15 from both sides, so I do a minus 15 there, and I do a minus 15 there.

  8. Adding complex numbers (video) | Khan Academy

    Learn how to break down the process of adding complex numbers into simple steps. First, add the real parts. Then, do the same with the imaginary parts. The result? A new complex number! Learn and try …

  9. Add within 100 using place value blocks - Khan Academy

    Add within 100 using place value blocks VA.Math: 2.CE.1.b, 2.CE.1.g VA.Math.2023: 2.CE.1.b, 2.CE.1.g Google Classroom Microsoft Teams

  10. Rational numbers: addition and subtraction | 7th grade math | Khan …

    Properties of addition & subtraction Associative and commutative properties of addition with negatives