Use prime-factorization to find the greatest common divisor (also called greatest common factor) and least common multiple of 336 and 252 . \( \operatorname{gcd}(336,252)=\square \) \( \operatorname{lcm}(336,252)=\square \)

\( (-\frac{8}{9}).(-\frac{27}{2}) \)

18. Isaac bought three packages of nuts He bought one package of peanuts the weighed 3.07 pounds. He also bought two packages of pecans that weighed 1.46 pounds and 1.5 pounds. Did the peanuts or the pecans weigh more? Hours much more?

Amanda wrote 3 stories in Writer's Workshop. Each story was 6 pages long. She drew 2 illustrations on each page. How many illustrations did Amanda draw altogether?

E 4 Litun : DIG DEEPER! You can complete one-half of a job in an hour. Your friend can complete one-third of the same job in an hour. How long will it take to complete the job if you work together? Write your answer as a decimal. The job will take hour(s).

15. \( \frac{1}{15}+\frac{6}{5} \div \frac{12}{7} \)