Question

a) 21 x 150 +35 85 + 40 x 28 = ?
b) (21 x 150-9x 150) + (35 x 85-18 x 85)+(40 x 28-12*28) = ?
c) (21-9) * 150+(35-18) ~ 85+ (40-12) 28 = ?​

Answer 1

Răspuns:

a) 21×150=3.150

40×28=1.120

3.150+35-85+1.120=4.220

b)(21×150-9×150)=1.800

(35×85-18×85)=1.445

(40×28-12×28)=784

1.800+1.445+784=2.461

c)(21-9)=12

(35-18)=17

(40-12)=28

12×150+17+85×28×18=42.657