Mental Math for Seniors

Abacus Math/Mental Math Level 3


In level 3, students will learn Big friend’s concept of Abacus for Subtraction. Application of Subtraction formulas for House of 10 on Abacus and on fingers as well.

Student Learning Outcomes:
• Introduction of House of 10 Subtraction formulas
• Working with House of 10 Formulas for Subtraction
• Addition & Subtraction on Fingers with formulas
• Addition and Subtraction on Abacus with formulas.
• Speed calculation
• Imaginary Calculation

• Pen and Paper
• Soroban Abacus
• Internet
• Laptop/desktop
• Pre-request Course: NA

Next Course:
Students will be able to take our next course “Abacus Math/Mental Math Level 4″

Course Outline:

Following is the course outline of the course:

Introduction To House Of 10 Subtraction -9 Formula

House Of 10 (-8)

House Of 10 (-7)

House Of 10 (-9, -8 And -7)

House Of 10 (-6)

Practice Day

House Of 10 (-5)

House Of 10 (-4)

House Of 10 (-3)

House Of 10 (-2)

House Of 10 (-1)

Practice Day


Certificate Distribution

About Us

EDVON is the unique online 1:1 live coding, robotics and mathematics program based on STEAM philosophy that will help your kids to be successful in future, by teaching them highly demanding 21st century technical and soft skills.