🧮 How to Do Addition and Subtraction on Abacus After Small Friend and Big Friend

What is Addition and Subtraction on Abacus After Small Friend and Big Friend?

Once your child learns small friend and big friend, the next step is combining them. This helps in two-digit and mixed sums. Many parents see big improvement in speed at this stage.

You no longer do simple single-digit sums only. Now you handle carry-over and borrow easily. This prepares kids for higher levels and mental math.

Sound familiar? Your child may now say “I can do it faster!” after regular practice.

Why Addition and Subtraction on Abacus Matter After Learning Friends

It builds real speed and accuracy. Kids stop counting beads slowly.

These skills improve concentration and memory. School math becomes easier.

Parents notice better exam results. Kids feel confident in class.

Example: A student in Level 2 solved 20 sums in 2 minutes after practicing mixed addition and subtraction.

How to Do Addition on Abacus After Small and Big Friends

Start with two-digit numbers. Combine both friends as needed.

Simple Two-Digit Addition Steps

First add units place. Use small or big friend if required. Then add tens place.

Handle carry-over by moving one bead on next rod.

Mixed Addition Examples

For 7 + 8: Use big friend (add 10, minus 2). Then add carry if any.

How to Do Subtraction on Abacus After Small and Big Friends

Subtraction uses the same friends but in reverse.

Basic Subtraction Rules

For units place, borrow if needed. Then apply small or big friend.

Common Subtraction Moves

Subtract 6: Use big friend (minus 10, plus 4). Clear the rod properly.

How to Practice Addition and Subtraction on Abacus at Home

Daily Practice Routine for Addition and Subtraction on Abacus Students

Do 20 mixed addition sums every morning using both friends. Takes 10 minutes.

Practice 15 subtraction rows in the evening. Focus on borrow cases.

Record time daily and try to beat your own record.

Level-Wise Exam Practice Tips for Addition and Subtraction on Abacus

Level 2 focuses on two-digit with friends. Level 3 adds speed and more digits.

What to Expect at Each Level Exam for Addition and Subtraction on Abacus

Level	Skills Tested	Tips
Level 2	Two-digit addition & subtraction	Master carry and borrow with friends
Level 3	Mixed three-digit sums	Practice under time limit
Level 4	Speed with mental visualisation	Reduce finger movement

Mental Math Practice Techniques for Addition and Subtraction on Abacus

Visualise the abacus in your mind. Move beads mentally for each sum.

Say the friend formula quietly while calculating.

Mental Math Practice for Different Ages with Addition and Subtraction on Abacus

Ages 4-7: Use physical abacus daily with short sessions.

Ages 8-12: Add timed drills with mixed friends.

12+: Shift fully to mental calculation without tool.

Real Story: How Rohan Improved His Addition and Subtraction

Rohan, 9 years old from Jaipur, was slow in two-digit sums. After learning to combine small friend and big friend, his speed increased a lot. In just one month he cleared Level 2 exam with good marks. His mother is happy that he now enjoys math practice at home.

Expert Tips for Addition and Subtraction on Abacus

Tip 1: Always Decide Friend First

Look at the number. Choose small friend or big friend quickly before moving beads.

Tip 2: Practice Carry and Borrow Separately

Do 10 sums only on carry-over. Then do borrow cases. This clears confusion.

Tip 3: Use Timed Practice

Set 2 minutes for 10 sums. Gradually reduce time as accuracy improves.

Tip 4: Visualise Without Abacus

Twice a week, close eyes and calculate mentally using friends.

Common Mistakes in Addition and Subtraction on Abacus

Wrong friend selection. Using big friend for small numbers. Fix: Check the digit first.

Forgetting carry-over. Common in addition. Fix: Always check tens place after units.

Wrong borrow in subtraction. Leads to negative beads. Fix: Practice borrow with 5 and 10 separately.

Slow bead movement. Reduces speed. Fix: Use correct finger technique daily.

No mental practice. Stays dependent on tool. Fix: Do 5 mental sums every day.

Do’s and Don’ts for Addition and Subtraction Practice

Do’s	Don’ts
Combine small and big friends daily	Practice only one friend
Handle carry and borrow carefully	Ignore mistakes in carry
Time your practice sessions	Practice without timer
Do both addition and subtraction	Focus only on addition
Review errors every day	Skip reviewing wrong sums
Try mental visualisation	Always use physical abacus
Celebrate faster times	Get upset on slow days

Before and After Mastering Addition and Subtraction on Abacus

Area	Before	After
Calculation Speed	Very slow	Much faster
Accuracy	Many errors	90%+ correct
Confidence	Low in exams	High and relaxed
Mental Math	Difficult	Easy and quick
Exam Performance	Average	Top scores

What Parents and Students Say

“After small and big friends, my daughter’s addition and subtraction became so smooth. She now loves abacus time.” — Neha Gupta, Jaipur (Parent)

“I can now do two-digit sums quickly. The friends really help.” — Vihaan, 8 years, Student

“Teaching addition and subtraction after friends is easier. Kids show visible improvement in speed.” — Rajesh Kumar, Abacus Teacher

Frequently Asked Questions

How to combine small friend and big friend in addition?

Check the digit first. Use small friend for 1-4 and big friend for 6-9. For 5 use direct bead.

When does subtraction become easy on abacus?

After regular practice of borrow with both friends. Start with simple two-digit subtraction.

What comes after small and big friends in abacus?

Two-digit addition and subtraction with carry and borrow. Then three-digit sums.

How much daily practice is needed?

15-20 minutes daily is enough. Split into morning addition and evening subtraction.

Can we practice addition and subtraction without abacus?

Yes. Use mental visualisation of beads after 2-3 weeks of tool practice.

Related Posts You May Like

• What is the Difference Between Small Friend and Big Friend in Abacus?
• Abacus Level 2 Syllabus and Practice Guide
• Abacus Addition and Subtraction Courses for Kids
• Simple Mental Math Tips for Abacus Students

Mission Abacus Pvt. Ltd. — Global Academy for Abacus Training | Jaipur, India