Question

1.25 +1.25x9简便计算

1.25 +1.25x9简便计算

Answer 1

1.25 +1.25x9
=1.25 ×(9+1)
=1.25×10
=12.5

Answer 2

1.25 +1.25x9
=1.25x(1+9)
=1.25x10
=12.5

Answer 3

1.25 +1.25x9
=1.25 ×1+1.25x9
=1.25 ×(1+9)
=1.25×10
=12.5