Please help me to create a set of 5 math problems suitable for [Student A] that require the use of fractions and decimals, including tasks for addition, subtraction, multiplication, and division. Additionally, provide specific feedback for each problem and suggest a variety of strategies for [Student A] to explore in order to solve them effectively and deepen their understanding of the concepts involved.
Suggest engaging and interactive activities that can assist my elementary students in learning multiplication and division, particularly with these numbers: [Insert numbers here], and ensure that they promote critical thinking and collaboration among the students.