# Laws of Indices

Updated: Jun 16, 2021

Dear students,

Indices is an important chapter in Secondary Math. Indices will be taught to Secondary 3 students in school. It is an important bridge to chapters such as logarithm in O Level A Math and N Level A Math. Furthermore, it is tested yearly in __O Level E Math, A Math and N Level Math and A Math examinations__ in Singapore.

However, the Laws of Indices are NOT in the ** O Level E Math**,

**and**

__A Math__

__N Level Math____and__

**formula sheet. So how are you going to remember these 9 laws by heart and apply them in exams?**

__A Math__** Math Lobby** will teach you some simple tricks to remember these laws easily! Let’s work hard together and strive for A1!

**Law 1 of indices: ** *(Remember that X the same bases means you can + their powers)*

**Law 2 of indices: ** (*Remember that * *the same bases means you can - their powers)*

**Law 3 of indices: ** *(Remember that ( ) means you can X their powers)*

**Law 4 of indices: ** *(Remember that if they have the same power means you can X their bases)*

**Law 5 of indices: ** *(Remember that if they have the same power means you can divide* *their bases)*

**Law 6 of indices: ** *(Remember that anything to the power of 0 gives us 1)*

**Law 7 of indices: ** *(Remember that you can remove the negative sign by putting * *in the denominator)*

** Law 8 of indices: ** *(Remember as IN/OUT. 1 will be IN the square root and n will be OUTSIDE the square root)*

**Law 9 of indices: ** *(Remember IN/OUT. m will be IN the square root and n will be OUTSIDE the square root)*

For queries on more important formulas and shortcuts which you need to master before taking your Secondary Math examinations, do contact us via SMS/WhatsApp/Telegram/Call **+65 96322202**,

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