You can find area and volume of rectangles circles triangles trapezoids boxes cylinders cones pyramids spheres. Be it large or complex numbers there are maths tricks for kids and adults to become a Mathematics Genius. A lot of percent problems turn out to be easy to solve when you give them a little thought.
You can simplify and evaluate expressions factormultiply polynomials combine expressions.
You can speed up the multiplication if one number is an even number. The students draw four quadrants and fill in each section as necessary. Y 3x 4. Adding large numbers just in your head can be difficult.