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Multiply the decimals $4\cdot 9.8\cdot 10^{-3}\cdot 10^{-8}$

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Multiplying multiples of powers of 10 | Numbers and operations | 8th grade | Khan Academy

https://www.youtube.com/watch?v=tV8cMNYi4q4

Tutorial - Solve a proportion by multiplying by the LCD ex 13, (2n - 9)/7 = (3 - n)/4

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Algebra 1 - Distributive Property, 4x(2x+y); -3(3a^2 -a+7); 2xy(x^2 -3xy+4x); (x/6)(x^2 +5x-9)

https://www.youtube.com/watch?v=4xx87GKdm04

Pre-Calculus - Multiplying radicals using the imaginary unit i, root(5) * root(-8)

https://www.youtube.com/watch?v=BcMwASDwWOM

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Multiplication 7: Old video giving more examples | Arithmetic | Khan Academy

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Main Topic: Multiplication of Decimals

To multiply decimals, line up the numbers on the right ignoring the decimal point and multiply them like whole numbers. Then, in the result, place the decimal point equal to the sum of decimal places of both multiplied numbers.

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