Learning Stages
Work through each stage in order for the best results. Every stage includes explanations, tips, and practice exercises.
Progress Roadmap
Single-Digit Addition
Master adding numbers 1 through 9 without carrying.
Addition With Carrying
Add single digits when the sum goes past 10.
Single-Digit Subtraction
Subtract numbers 1 through 9 without borrowing.
Subtraction With Borrowing
Subtract when the bottom digit is larger than the top.
Complements of Ten
Instantly find what pairs with a number to make 10.
Doubles and Near-Doubles
Use doubling patterns to add similar numbers quickly.
Two-Digit Plus Single (No Carry)
Add a single digit to a two-digit number when ones stay under 10.
Two-Digit Plus Single (With Carry)
Add a single digit when the ones column overflows.
Two-Digit Minus Single (No Borrow)
Subtract a single digit when the ones digit stays positive.
Two-Digit Minus Single (With Borrow)
Subtract a single digit when borrowing from the tens is required.
Two-Digit Addition (No Carry)
Add two two-digit numbers when both columns stay clean.
Two-Digit Addition (With Carry)
Add two-digit numbers when the ones or tens column overflows.
Two-Digit Subtraction (No Borrow)
Subtract two-digit numbers when each column subtracts cleanly.
Two-Digit Subtraction (With Borrow)
Subtract two-digit numbers requiring borrowing across columns.
Multiplication: 1, 2, 5, and 10
Master the easiest multiplication tables using patterns.
Multiplication: 3, 4, and 6
Learn the 3, 4, and 6 times tables using building blocks.
Multiplication: 7, 8, and 9
Conquer the hardest tables with finger tricks and complements.
Division Basics
Divide mentally using the inverse of multiplication.
Mixed Operations & Order
Combine addition, subtraction, multiplication, and division correctly.
Advanced Mental Math
Squares, estimation, percentages, and rapid calculation techniques.