multiplication by 5-
If any number is to be multiplied by 5 then first divide that number by 2 if remainder is 0 put 0 after quotient and if remainder is 1 put 5 after quotient that is the multiplication result.
26 x 5=130
How! divide 26 by 2 quotient is 13 remainder 0 put 0 after 13 that is 130
45x5= 225 - divide 45 by 2 quotient is 22 remainder 1 then put 5 after 22 that is 225.
multiplication by 25-
If any number is divided by 4 there are 4 chances of remainders 0,1,2,and 3 in multiplication of any number by 25 first divide the number by 4 if remainder is 0 put 00 after quotient similarly 25,50 75 if remainders are 1or 2 or 3 respectively Then you can get result easily. example
36 x 25= 900 How! divide 36 by 4 quotient is 9 put 00 as remainder is 0
58 x 25= 1450 divide 58 by 4 quotient is 14 and remainder is 2 put 50 for remainder 2 that is 1350
multiplication by 125-
If any number is to be multiplied by 125 then first divide that number by 8 if remainder is 0 put 000 after quotient and if remainder is 1 put 125 after quotient if remainder is 2 put 250 and similarly 375,500,625,750,875 for remainder 3,4,5,6 and 7 In this way you can get result quickly.
45 x 125= 5625, 765x 125=95625, 2349 x 125=293625
Try these- (i)456 x125 =---- (ii)322 x 125=------ (iii)5665 x 125=-------
If any number is to be multiplied by 5 then first divide that number by 2 if remainder is 0 put 0 after quotient and if remainder is 1 put 5 after quotient that is the multiplication result.
26 x 5=130
How! divide 26 by 2 quotient is 13 remainder 0 put 0 after 13 that is 130
45x5= 225 - divide 45 by 2 quotient is 22 remainder 1 then put 5 after 22 that is 225.
multiplication by 25-
If any number is divided by 4 there are 4 chances of remainders 0,1,2,and 3 in multiplication of any number by 25 first divide the number by 4 if remainder is 0 put 00 after quotient similarly 25,50 75 if remainders are 1or 2 or 3 respectively Then you can get result easily. example
36 x 25= 900 How! divide 36 by 4 quotient is 9 put 00 as remainder is 0
58 x 25= 1450 divide 58 by 4 quotient is 14 and remainder is 2 put 50 for remainder 2 that is 1350
multiplication by 125-
If any number is to be multiplied by 125 then first divide that number by 8 if remainder is 0 put 000 after quotient and if remainder is 1 put 125 after quotient if remainder is 2 put 250 and similarly 375,500,625,750,875 for remainder 3,4,5,6 and 7 In this way you can get result quickly.
45 x 125= 5625, 765x 125=95625, 2349 x 125=293625
Try these- (i)456 x125 =---- (ii)322 x 125=------ (iii)5665 x 125=-------
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