Question

Cho mình hỏi thêm bài này nhé

Answer 1

Bài 2

9+9.3+18:2.6

=9.4+9.6

=9.(4+6)

=9.10

=90

3.9+18.2+2.9+9

=3.9+9.4+9.3

=9.(3+4+3)

=9.10

=90

44.5+18.10+20.5

=22.10+18.10+10.10

=10.(22+18+10)

=10.50

=500

Answer 2

1. 

= 9 + 27 + 9 . 6

= 9 + 27 + 54

= 90

2.

= 27 + 18 . 2 + 2 . 9 + 9

= 27 + 36 + 18 + 9

= 90

3.

= (44 x 5) + (18 x 10) + (20 x 5)

= 220 + 180 + 100

= 500

 

Answer 3

Bài 2:

a) Ta có: \(9+9\cdot3+18:2\cdot6\)

\(=9+9\cdot3+9\cdot6\)

\(=9\left(1+3+6\right)\)

\(=9\cdot10=90\)

b) Ta có: \(3\cdot9+18\cdot2+2\cdot9+9\)

\(=3\cdot9+4\cdot9+2\cdot9+9\)

\(=9\left(3+4+2+1\right)\)

\(=9\cdot10=90\)

c) Ta có: \(44\cdot5+18\cdot10+20\cdot5\)

\(=44\cdot5+36\cdot5+20\cdot5\)

\(=5\left(44+36+20\right)\)

\(=5\cdot100=500\)