[PDF] Unit-11 Exponents and Powerspmd - NCERT

2608_6gemp111.pdf • Exponents are used to express large numbers in shorter form to make them easy to read, understand, compare and operate upon. •a × a × a × a = a4 (read as ' a " raised to the exponent 4 or the fourth power of a), where 'a" is the base and 4 is the exponent and a 4 is called the exponential form. a × a × a × a is called the expanded form. • For any non-zero integers ' a " and ' b " and whole numbers m and n, (i)am × a n = a m+n (ii)a m ÷ a n = a m-n , m>n (iii)(a m ) n = amn (iv)a m × b m = (ab) m (v)a m ÷ b m = m ab (vi)a 0 = 1 (vii)(-1) even number = 1 (viii)(-1) odd number = -1 •Any number can be expressed as a decimal number between 1.0 and 10.0 (including 1.0) multiplied by a power of 10. Such form of a number is called its standard form or scientific notation. •Exponets axrxudxlgxum b xnb xidhbxdtufdEagxdhuxdixkmfymxdE xfaxydbb yu, cbfu xum xydbb yuxdE , ponets xr.+‡÷y+nA+ytx+An22nds,pr+ytx+,÷qcx×+dtsht+s=+,ny+xˆ÷>2+yn+ +‰ Š' ++s= l>v+ OE Š OE lcv OE Š OE- lhv+ OE Š OE- l.v

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8.The cube of 8 is __________.

9. Square of -11 is __________.

10. The value of (11)

2 is ___________.