a) 54x113+45x113+113 b)117x(36+62) -17x(62+36)
=(54+45+1)x113 =117x98-17x98
= 100x113 =(117-17)x98
= 11300 =100x98
=9800
a,54 x 113 + 45 x 113 + 113
=(54 + 45 +1) x 113
=100 x 113 = 11300
a) 113*( 54+45+1 ) = 113* 100=11300
b) 117*98-17*98=98*( 117-17 ) = 98*100=9800
a) 54*113 + 45*113 + 113
= 54*113 + 45*113 + 1*113
=(54+45+1)*113
=100*113
=11300
b) 117*(36+62) -17*(62+36)
= 117*98 - 17*98
= (117-17)*98
= 100*98
= 9800
Ok nhé!
a) 54 * 113 + 45 * 113 + 113
= 54 * 113 + 45 * 113 + 113 * 1
= 113 * ( 54 + 45 + 1 )
= 113 * 100 = 11300
b) 117 * ( 36 + 62 ) - 17 * ( 62 + 36 )
= 117 * 98 - 17 * 98
= 98 * ( 117 - 17 )
= 98 * 100
= 9800
học vui ^^
a, 54×113+45×113+113
= (54+45+1)×113
=11300
b, 117×(36+62)-17×(62+36)
=117×98-17×98
=(117-17)×98
=9800