Answer:
Her sister ate more cookies.
Step-by-step explanation:
If you convert 3/6 into a simplified fraction, it turns into half. Half of 12 is 6. Natalie ate 3 cookies. Therefore, her sister ate more.
4.2 because it has a box around the corner that makes it whole
It is an over estimate because 5.82-4.29=1.53 it is closer to 1.5 not 2