Transcript 6-12a Divide Fractions by Whole Numbers

Divide Fractions by
Whole Numbers
Honors Math – Grade 5
Problem of the Day
Mrs. Kelly divided a half loaf of raisin bread equally among her
6 grandchildren. What fractional part of the loaf of bread did
each grandchild receive?
What are the important facts?
What operation does this
word problem suggest?
Division! Let’s take a closer look…
To divide a fraction by a whole number…
1. Rename the whole
number as a fraction
with denominator of 1.
2. Multiply by the reciprocal of
the whole-number divisor.
3. Cancel; Multiply
numerators,
denominators; Simplify.
1. Rename the whole
number as a fraction
with denominator of 1.
2. Multiply by the reciprocal of
the whole-number divisor.
3. Cancel; Multiply
numerators,
denominators; Simplify.
To divide a fraction by a fraction…
1. Rename the whole
number as a fraction
with denominator of 1.
2. Multiply by the reciprocal of
the whole-number divisor.
3. Cancel; Multiply
numerators,
denominators; Simplify.
1. Rename the whole
number as a fraction
with denominator of 1.
2. Multiply by the reciprocal of
the whole-number divisor.
3. Cancel; Multiply
numerators,
denominators; Simplify.
Divide.
Divide.
Divide.