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Pre-algebra - Khan Academy
Master pre-algebra concepts with Khan Academy's free, interactive lessons and practice exercises.
Khan Academy
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Free Math Worksheets - Khan Academy Blog
That’s because Khan Academy has over 100,000 free practice questions. And they’re even better than traditional math worksheets – more instantaneous, more interactive, and more fun! Just choose your grade level or topic to get access to 100% free practice questions:
Simplify fractions (practice) | Fractions | Khan Academy
Practice writing fractions in simplest form. Skip to main content If you're seeing this message, it means we're having trouble loading external resources on our website.
Lesson on complex fractions? – Khan Academy Help Center
Complex fractions are sometimes called rational expressions. Take a look at the videos about rational expressions. Hopefully, it is what you are looking for. Here is a link to the videos. http://www.khanacademy.org/math/algebra2/rational-expressions/multi-div-rational-exp/v/multiplying-and-simplifying-rational-expressions
Simplifying square-root expressions (video) | Khan Academy
Worked examples of taking expressions with square roots and taking all of the perfect squares out of the square roots. For example, 2√(7x)⋅3√(14x²) can be written as 42x√(2x).
4th Grade: Order Equiv Fractions & Comparing Fractions. Order …
I needed to make this post about Fractions in 4th Grade the 4th Grade Unit: Equivalent fractions and comparing fractions and in the Fractions Unit of the Arithmetic Section.
Simplifying answers. - Khan Academy Help Center
2024年3月18日 · Why do we have to simplify answers on some questions and not others, in the same lesson? For instance fractions and decimals. Sometimes just 10 wont work and you have to put 10/1 as the answer (or 20/2) and vice versa.
Finding area with fractional sides 2 (video) | Khan Academy
Now, you simply put the numeratior back where it goes, getting 12/5, and there's your answer. There you can simplify it or whatever, like make it 2 2/5 or whatever, but that's separate.