Answer:
12/4 * 3 or 3 ÷ 12/4
Explanation:
Don't worry, I got you covered.
First, you examine the words in the sentence. After you look at the key-words, which would be "12 fourths in 3." This would translate to 12/4 into 3. Here's the examples.
Start by dividing rather than multiplying for your first equation.
3 ÷ 12/4. If you want 3 to be equal to 12/4 in division, you want to take the largest number and divide it into the smaller number. In this case, the large number would be 3 while the small number would be 12/4. It still makes it correct, despite you changing the problem a bit.
This would get you the easiest way to use your division.
Finally, try making a multiplication problem. If you want there to be 3 equal to 12/4, another justification could be 12/4 * 3. This would keep the problem true, while still solving the missing equation.