Page 23 - SPARK OF MATH book 6
P. 23
(2-2) Divide Fractions.
1
Find 3 ÷ using models.
2
Step 1: draw 3 shapes.
Step 2: divide each shape for 2 parts.
Note that there are 6 parts.
and 3 × 2 = 6
1
Remember that division is the inverse operation of
multiplication.Therefore, dividing by a fraction can
be done by multiplying by its reciprocal.
The reciprocal of a fraction is just the fraction
turned upside down, so that the numerator and
denominator have switched places.
Example:
3 1 1 2
4 6 3 5
3 6 18 4 2
4 1 4 4
1 5 1 5 5
keep change flip 3 2 3 2 6
23