KN

Mental Math

Abacus training

Practice

Progress

🔥

0

day streak

Mental Math

KN

Train your mental math.

Flashcards, structured Orion tests, or custom sessions

Flashcards

Operations (select & expand to configure)

±Add/Sub

×Mul

÷Div

Timing

Show answer after

Seconds before answer reveals

3s

Auto-next after answer

5s

Flash Mode (Add/Sub only)

Flash the numbers

Show operands one at a time before thinking

Flash speed

Seconds shown per number

0.5s

Think…

Session Done

KN

Test Mode

Curriculum

Level

Operations (select & expand to configure)

±Add/Sub

×Mul

÷Div

Session

Number of questions

20

Time limit

5 min

Flash Mode (Add/Sub only)

Flash the numbers

Show operands one at a time before answering

Flash speed

Seconds shown per number

0.5s

Think time

Seconds to hold the answer

3s

Orion

⏱ 5:00

×

1 / 30

Section Results

KN

⏱ 5:00

Custom

Watch the numbers

1 / 20

Test Results

KN

History