From beginner · 8 lessons
Mental math for life
A practical course combining concise theory, active response, feedback, review and application.
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Learning path
Start with the first lesson
Open a lesson, read the explanation, complete the practice, and answer correctly to finish.
01
Estimate first
Explanation and active recall.
02
10%, 5%, 1%
An example and the key mistake.
Complete the previous lesson to unlock.03
Doubling and halving
A practical action.
Complete the previous lesson to unlock.04
Unit price
Understanding check.
Complete the previous lesson to unlock.05
Discounts
Real-life use.
Complete the previous lesson to unlock.06
Time and speed
Explanation and active recall.
Complete the previous lesson to unlock.07
Order of magnitude
An example and the key mistake.
Complete the previous lesson to unlock.08
Checking the result
A practical action.
Complete the previous lesson to unlock.Reserved for future video
Text lessons and practice are available now. Video will be added after the platform is selected.