Question

I need help with everything in pink, I did these notes during class so they might not be the best handwriting just ask me if you need me to clarify anything.

Answer 1

we have

estimated the quotient

41.9/8.6

41.9 is less than 45 ------> round down 40

8.6 is greater than or equal to 8.5 ----->round up 9

therefore

41.9/8.6=40/9