Answer:
It helps you know if the answer is reasonable because when you do the work and get your answer, you can check if it is close to your estimate, and if it is, it is most likely correct. On the other hand if it is not close to the estimate it is most likely wrong, unless you estimated incorrectly.
Step-by-step explanation:
Answer:
ask an adult, about the situation
Step-by-step explanation:
Answer:
c is correct answer is yes
Answer: 2
Step-by-step explanation: because it timed the seconde one so that is why its 2
hope the answer helped :)