Question

1,Tính nhanh

24.(15+49)+12.(50+42)

Answer 1

24.(15+49)+12(50+42)

=24.64+12.92

=24.64+24.46

=24.110=2640

Answer 2

24x(15+49)+12x(50+42)=24x64+12x92

= 24x 64+24x46

= 24x(64+46)

= 24x110=2640

Answer 3

24.(15+49)+12.(50+42)

=24.46+12.92

=24.64+24.46

=24.110=2640