Question

tính nhanh:

50 x 10 + 50 x 10

Answer 1

50 x 10 + 50 x 10

= (50 + 50) x 10

=    100 x 10

=       1000

Answer 2

50.(10+10)=50.20=1000

cách 2 :

10.(50+50)=10.100=1000

k nha

Answer 3

=500+500

=1000

Answer 4

1000x1