These problems will help your students review the following 4th grade skills: Adding and Subtracting Fractions and Mixed Numbers, Multiplying a Whole Number by a Fraction, Converting Mixed Numbers to Improper fractions, and putting answers in Simplest Form
They include the following Common Core State Standards:
CCSS.Math.Content.4.NF.B.3d Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators.
CCSS.Math.Content.4.NF.B.4c Solve word problems involving multiplication of a fraction by a whole number.
CCSS.Math.Content.4.NF.A.1 Recognize and generate equivalent fractions.
I recommend printing pages 3-7 on cardstock and laminating them for future use. This gives your students 20 word problems to practice their fraction skills. Page 8 is an answer sheet for students to use to record answers and page 9 is an answer key.
I use this at the end of our 4th grade fraction unit to really emphasize how important it is to put answer in simplest form.