Question

find the product of 3 1/4 and 12​

Answer 1

=3$\frac{1}{4}$ × 12

= $\frac{13}{4}$ × 12

=13×3

=39

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Answer 2

Answer:

Product of $3 \frac{1}{4}$ and $12$ is $39$ .

Step-by-step explanation:

To find : product of $3 \frac{1}{4}$ and $12$.

Solution:

• Multiplication is a process of repetitive addition of integers.
• Multiplication rules for integers :

1. If two negative integers are multiplied then the product obtained is positive integer. i.e. $(-) \times(-)=+$
2. If one negative and one positive integers are multiplied then the product obtained is negative integer. i.e. $(-) \times(+)=-$
3. If both positive integers are multiplied then the product obtained is positive integer. i.e. $(+) \times(+)=+$

• Therefore according to above rule we solve .
• Converting mixed fraction to improper fraction : $3 \frac{1}{4} = \frac{12 + 1}{4} = \frac{13}{4}$
• Now , multiplying $\frac{13}{4}$ and $12$

        $\frac{13}{4} \times 12 \\\\= 13 \times 3\\\\= 39$