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*Write all final answers as fully reduced improper fractions.Pre-Practice (Optional):How do you write a whole number as a fraction? Write an example.When do you need a common denominator? For what calculations is it unnecessary?What is the rule for multiplying fractions? Evaluate 1357 What is the reason that we reduce before multiplying? Use 259610 as an example.What is the rule for dividing fractions?Evaluate 542012Evaluate 38÷924Mandatory – No calculator:Evaluate-415976914107-73112322-37÷12-45÷-4358÷-712253156-132-79÷-216+5125-2-35-1-5Answers:Put the number over 1. Dividing by 1 won’t change the number.You need a common denominator when adding and subtracting fractions, but not when multiplying or dividing.Multiply across the top of the fractions, and multiply across the bottom of the fractions. If you can, reduce numbers before multiplying.521If we reduce before multiplying, we do not have to reduce large numbers. When not using a calculator, it is much faster to reduce before multiplying. For example, if we didn’t reduce first, 259610 would multiply to 15090. If we reduced first, we would not have to reduce after.Flip the second fraction or the bottom fraction, and then multiply.341-12534-10334-6735-1514 2992336-5 ................
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