6.3. FRACTIONS: MULTIPLICATION AND DIVISION 105

Case 2 Fraction times a whole number.

Example.1

4⇥ 3 = (1st option – use commutativity)

3⇥ 1

4=

1

4+

1

4+

1

4=

3

4

1

4⇥ 3 =

3

4(2nd option – think

1

4of 3)

Case 3 Fraction times (of) a fraction.

Example.1

3⇥ 5

7means

1

3of

5

7.

1

3⇥ 5

7=

5

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