Question

que propiedades se aplicaron :
123+45+37=
(37+123)+45



250×12=
200×12+50×12=




1260:20=
1000:20+60:20=

Answer 1

123 + 45 +37 =  205

(37 + 123 ) + 45 = 205 

250 * 12 = 3000

200*12+50*12 = 2.400

1260/20=  63

100/20+60/20=  3,25