Numberock

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DIVIDING WHOLE NUMBERS BY FRACTIONS: Activity Bundle by NUMBEROCK A journey into medieval times is the perfect setting to learn how to divide a whole number by a fraction. Ivan is everyone’s favorite stone mason as he builds walls and seats from blocks of rocks for us to contemplate what it means to divide by a fraction.

Meanwhile, in the Kingdom there is a dragon afoot that threatens the peaceful learning process; yet, there is no reason to fear! A rapper knight has come to save the day, protect our wonderful stone mason teacher, and pledge his love to the princess of the land. Full version of the video here – https://www.youtube.com/watch?v=povqzkcV5mU

DIVIDING WHOLE NUMBERS BY FRACTIONS: Activity Bundle by NUMBEROCK A journey into medieval times is the perfect setting to learn how to divide a whole number by a fraction. Ivan is everyone favorite stone mason as he builds walls and seats from blocks of rocks for us to contemplate what it means to divide by a fraction.

LYRICS: I took my blocks and built two walls. In each wall one block was one fourth of them all. Two divided by one fourth equals eight; eight blocks to build the wall at my castle gate. To divide a whole number by a fraction we start by dividing the whole number into fractional parts. Then count the number of fractional parts present; and that will be the quotient.

Then I took my blocks and built three seats. One block was one fifth of each. Three divided by one fifth equals fifteen; that’s how many blocks it took to build my seats. When there’s a fraction we want to divide by, we can flip the fraction and multiply. Think of three divided by one fifth: we’ll get the same answer if we multiply and flip. So these expressions are equal, and we call five over one, one-fifths reciprocal.