The multiplication and addition problems can be very helpful for teachers as they provide a quick and easy way to assess a student's understanding of basic math concepts. By assigning these problems as homework or classwork, teachers can monitor their students' progress and determine if they need extra support in certain areas.

Furthermore, repetition of these problems can help students improve their mental math skills and increase their speed and accuracy. It is important for students to develop these skills as they progress through their math education, as they will be required to perform quick calculations in higher-level math courses and in real-life situations.

In addition, these problems can be a useful tool for differentiation in the classroom. Teachers can assign different sets of problems based on each student's current level of understanding, allowing them to work at a pace that is comfortable for them while still being challenged.

Overall, incorporating multiplication and addition problems into classroom activities can provide numerous benefits for both teachers and students alike.