One-Step Mixed Challenges

There are 19 students. Each student needs 7 pencils.

There are 37 students. Each student needs 7 pencils.

There are 50 students. Each student needs 11 pencils.

There are 31 students. Each student needs 14 pencils.

There are 11 students. Each student needs 7 pencils.

There are 13 students. Each student needs 10 pencils.