Question

Tính nhanh

45 x 35 + 55 x 35

Answer 1

45 x 35 + 55 x 35

= ( 45+  55 ) x 35

= 100 x 35

= 3500

Answer 2

45 x 35 + 55 x 35

= 35 x ( 45 +  55 )

= 35 x 100

= 3500

Answer 3

45.35+55.35

=45.(35+55)

=45.100

=4500

k mk nhe

Answer 4

=35x (45+55)

= 35 x 100

= 3500