honestly i was a little confused with the way this question was worded so please tell me if i did something wrong or if i didn't explain/understand this right!
answer:
3 dollars or 300 cents
Explanation:
well we know that 4 quarters equal one whole dollar so what i did was divide 12 by 4 to get 3 whole dollars
12/4
= 3 dollars
and we know that 100 pennies equal one whole dollars, all you need to do was multiply 3 dollars by 100 pennies
3 * 100
= 300 pennies
showing you that abby has 300 cents in her piggy bank
hope this help and if you need anymore then just ask me!