WHO TOLD MATHS IS
COMPLICATED?
HERE WE COULD STRIKE THE ANSWERS FOR THE FOLLOWING MULTIPLICATIONS, AND SQUARE NUMBER CALCULATIONS WITHIN 5 TO 10 SECONDS. ALL ARE HAVING SHORT CUT LOGICS :)
1. A) 51*51 = 2601 B) 71*71=5041 C) 31*31=961
Ex 51 * 51
then first digit multiply 5*5=25
then first digit add 5+5=10
last digit 1* 1=1 =25+(1) 0 1=2601
2. A)33*37=1221 B) 42*48=2016 C) 56*54=3024
ex 33*37
last digit multiply 3*7=21
first digit add one and multiply 3*4=12
answer 1221
3. A)95*95=9025 B) 75*75=5625 C) 95*95=9025
Ex 95*95
first digit add 1 and then multiply with second number first digit 10*9=90
both last digit multiply 5*5=25
Answer 9025
HERE WE COULD STRIKE THE ANSWERS FOR THE FOLLOWING MULTIPLICATIONS, AND SQUARE NUMBER CALCULATIONS WITHIN 5 TO 10 SECONDS. ALL ARE HAVING SHORT CUT LOGICS :)
1. A) 51*51 = 2601 B) 71*71=5041 C) 31*31=961
Ex 51 * 51
then first digit multiply 5*5=25
then first digit add 5+5=10
last digit 1* 1=1 =25+(1) 0 1=2601
2. A)33*37=1221 B) 42*48=2016 C) 56*54=3024
ex 33*37
last digit multiply 3*7=21
first digit add one and multiply 3*4=12
answer 1221
3. A)95*95=9025 B) 75*75=5625 C) 95*95=9025
Ex 95*95
first digit add 1 and then multiply with second number first digit 10*9=90
both last digit multiply 5*5=25
Answer 9025