I created this mental maths PowerPoint as a way of reducing printing in my classroom. It has been very effective with my students and is an easy way of practicing our mental maths at the start of each lesson.
My grade 3/4 students have 5 minutes to work on their mentals, after which we correct them as a class. I then record their score on a chart so that they can see the improvements each time we revisit that table.
Each slide includes 40 questions, 20 for multiplication and 20 for division. Answers are included on the next slide. Covers up to the 12 times tables.