Question

(145.99+145)-(143.101-143)

tinh nhanh nhat

Answer 1

( 145 x 99 + 145 ) - ( 143 x 101 - 143 )

= ( 145 x ( 99 + 1 ) - ( 143 x ( 101 - 1 )

= 145 x 100 - 143 x 100

= 14500 - 14300

= 200