Помогите решить .....

Question

Помогите решить .....

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Answer 1

1. (20+30)•6= 50•6= 300
20•6+30•6=300

2. (70+20)•6=90*6=540
70*6+20*6=540

3. (5+4)*80= 9*80=720
5*80+4*80=720

4.(3+4)*90=7*90= 630
4*90+3*90=630

5.(90+6)*2= 96*2= 192
90*2+6*2=192

6. 5*(60+3)= 5*63=315
5*60+5*3=315