Question

10. Calculează. a) [(72 x 3-80): 2+2 x 124] : 4 = b) 400 + 480: 4- [640 : 2 + 4x (20 + 12 + 18)] = c) [1 + 2 x (6 + 6:3) - 5]: 6 = d) 180: 2+ [(50 x 2: 10 +90) + 10] -25 × 4 = e) [1 019 + (837 : 3 +528 : 4)] x 2 = Frol1 1000 3 x 293) =​
vă rog dau

Answer 1

Salut!

a) [(72•3-80):2+2•124]:4 =
= [(216-80):2+2•124]:4
= [136:2+2•124]:4
= [68+248]:4
= 316:4
= 79

b) 400+480:4-[640:2+4•(20+12+18)] =
= 400+480:4-[640:2+4•50]
= 400+480:4-[320+200]
= 400+480:4-520
= 400+120-520
= 0

c) [1+2•(6+6:3)-5]:6 =
= [1+2•(6+2)-5]:6
= [1+2•8-5]:6
= [1+16-5]:6
= 12:6
= 2

d) 180:2+[(50•2:10+90)+10]-25•4 =
= 90+[(10+90)+10]-100
= 90+[100+10]-100
= 90+110-100
= 100

e) [1.019+(837:3+528:4)]•2 =
= [1.019+(279+132)]•2
= [1.019+411]•2
= 1.430•2
= 2.860

La f) nu am inteles problema, dacă vrei poți sa-l postezi Înc-o dată.