Subtract & Multiply 2

Last updated almost 5 years ago
2 questions
1

A chef needs twelve potatoes for a meal. He has already cooked four. If each potato takes two minutes to cook, how long will it take him to cook the rest?

Model to solve.

1

A worksheet had four problems on it. If a teacher had thirteen worksheets to grade and had already graded eight of them, how many more problems does she have to grade?

Model to solve.