Question

12. Transformați expresiile folosind proprietățile înmulțirii calculaţi: c)440:4+560:4;123×4+97×4
d) 500:20-20-260:20;;8×412-£×310​

Answer 1

Explicație pas cu pas:

a) (204+488):4=204:4+488:4=51+122=173

(28+17)*5=28*5+17*5=140+85=245

b) (1260-660):6=1260:6-660:6=210-110=100

2*(4500-750)=2*4500-2*750=9000-1500=7500

c) 440:4+560:4=(560+440):4=1000:4=250

123*4+97*4=4(123+97)=4*220=880

d) 500:20-260:20=(500-260):20=240:20=12

8*412-8*310=8(412-310)=8*102=816