6000 + 500 + 7
6*1000 + 5*100 + 0*10 + 7*1
6*103 + 5*102 + 0*101 + 7*100 (I especially like this exponential form because I believe it clearly shows how the position of the digits is related to place value. When you get into decimals, you will see that the exponents go -1, -2, -3, ... As you move to the right of the decimal point. These numbers are all base-10, but other number bases can be used, too. If this were a base-8 number, for example, its value would be 6*83+5*82+0*81+7*80.)
6*1000 + 5*100 + 0*10 + 7*1
6*103 + 5*102 + 0*101 + 7*100 (I especially like this exponential form because I believe it clearly shows how the position of the digits is related to place value. When you get into decimals, you will see that the exponents go -1, -2, -3, ... As you move to the right of the decimal point. These numbers are all base-10, but other number bases can be used, too. If this were a base-8 number, for example, its value would be 6*83+5*82+0*81+7*80.)