Sky

Levels 20–24 · addition, subtraction, multiplication, division

High above the clouds with fast mixed operations.

Study Before You Play

Brush up on these topics to sharpen your skills for this zone.

Order of Operations

Learn the correct sequence for evaluating mathematical expressions.

Mental Math Strategies

Learn tricks and strategies to solve math problems quickly in your head.

Estimating Products

Learn to estimate multiplication answers by rounding before multiplying.

Mixed Add & Subtract

Practice solving problems that mix adding and subtracting in one expression.