Multiplication and decomposition tricks
This 3-minute lesson is part of the "Quantitative skills" module, in the "Master the case" block of the FrameLab training for strategy consulting interviews. It opens with "Decomposition by difference of squares" and closes on "Practice on case numbers".
What you will learn
- 1Decomposition by difference of squares
- 2Compensation with round multiples
- 3Decomposition by convenient factors
- 4Practice on case numbers
Where it sits in the training
- Block
- Master the case
- Module
- Quantitative skills
- Previous lesson
- Why mental math matters in an interview
- Next lesson
- Percentages, fractions and conversions
The other lessons of the module
- Why mental math matters in an interview
- Percentages, fractions and conversions
- Handling large numbers
- Timed mental-math drill
- Calculating under stress
- Business economics: margin, contribution, break-even, market share
- Verbalize, calculate, check, interpret: the full chain
- Turning a result into a business insight
Go further
Frequently asked questions
How long is the "Multiplication and decomposition tricks" lesson?
It runs for 3 minutes. It belongs to the "Quantitative skills" module, which has 9 lessons.
Do I need to watch the previous lessons first?
It helps: the training is built to be followed in order, and this lesson comes right after "Why mental math matters in an interview". You can still watch it on its own if this is the topic you want to work on.
How do I watch the full lesson?
The full lesson is for FrameLab members, like the rest of the training. The subscription starts with 7 free days.