Real math help.
How Do You Add and Subtract Matrices with Fractions and Decimals?
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Practicing with matrices can help you understand them better. Follow along with this tutorial to get some practice adding and subtracting matrices! You even get to use decimals and fractions!
Background Tutorials
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Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators.
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How Do You Add Fractions with Different Denominators?
Trying to add fractions with unlike denominators? You're going to need a common denominator first! Follow along with this tutorial and see what you need to do to add these fractions together.
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Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.
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How Do You Subtract Decimals?
Doing math with paper and pencil can come in real handy, so make sure you're comfortable subtracting decimals by hand. After all, you don't want the calculator to be a crutch!
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How Do You Add Decimals?
Doing math with paper and pencil can come in real handy, so make sure you're comfortable adding decimals by hand. After all, you don't want the calculator to be a crutch!
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Understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative. Show that a number and its opposite have a sum of 0 (are additive inverses). Interpret sums of rational numbers by describing real-world contexts.
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How Do You Add a Negative Number to a Positive Number?
How do you combine a positive and a negative number? This tutorial shows you how. You even get to see it explained with a number line!
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Understand subtraction of rational numbers as adding the additive inverse, p - q = p + (-q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.
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How Do You Subtract a Negative Number from a Positive Number?
Subtracting a negative from a positive? Just remember: subtracting a negative is the same as adding a positive. See how it works in this tutorial!
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Further Exploration
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Evaluate expressions at specific values of their variables. Include expressions that arise from formulas used in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations).
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What is a Variable?
You can't do algebra without working with variables, but variables can be confusing. If you've ever wondered what variables are, then this tutorial is for you!
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