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2178                                                            ARITHMETIC

To multiply one fraction by another fraction.

To multiply one fraction by another fraction, multiply the numerators together for the numerator of the product, and multiply the denominators together for the denominator of the product, and reduce to simplest form.

Multiply, cancelling when possible :

« X A          * X A          & X A           « X A

4f X A         f X A         iiXf          * X A

A X H         tf X A           * X A. if X &

To multiply a mixed number by a mixed number.

Multiply 3§ t-y 6§ = £f»* = if- = 22$.

2

To multiply a mixed number by a mixed number, change the mixed numbers to equivalent fractional numbers, and multiply as fractions.

Multiply the following mixed numbers:

3iX**            45|X28i              6fX   9f

2fX3f            821X181             81fX23f

35f X 3f           15f X 15f             17f X 14*

To multiply an integer by a mixed number. Multiply 125 by 4f.

To multiply an integer by a mixed number, multiply the integer by the fractional part of the mixed number, and then by the whole part.

Multiply 128 by 4f.

f        i£&.*JL2. ~ JL^LJ. — 563|.    When   the   integer   cannot  be   divided

evenly by the denominator of the fractional part of the mixed number, change the mixed number to a fractional number and multiply. Multiply, using the method best adapted to the example.

164X171             152 X   24f              504 X87-J.

225 X  2f              225 X   16f                72X521

136 X  5£              192 X 204f              108 X 671

187X16A            5i6X   54&             725X90f

125

__4f

5J25Q

50

500

550