Question

culeaza:
a) (18+ 2 x 7): (12:2 +8:4)
d) 42 : 7 + (6 + 6): 2 – 24 : (5 + 3)
b) 24 - 24: 3 x (72:9-2x3): 4 x 54 e) (25 + 20): 5 – (19 +5): 8
c) 36: 6+4 2 x 5 - (20 - 12:3) f) 10 + (10 : 10 + 10) - (10 x 1 + 10)​

Answer 1

Răspuns:

a)  ( 18 + 2 × 7 ) : ( 12 : 2 + 8 : 4 ) =

= ( 18 + 14 ) : ( 6 + 2 )

= 32 : 8 = 4

b)  24 - 24 : 3 × ( 72 : 9 - 2 × 3 ) : 4 × 5 =

= 24 - 8 × ( 8 - 6 ) : 4 × 5 =

= 24 - 8 × 2 : 4 × 5 =

= 24 - 16 : 4 × 5

= 24 - 4 × 5

= 24 - 20 = 4

c)  36 : 6 + 4 × 2 × 5 - ( 20 - 12 : 3 ) =

= 6 + 8 × 5 - ( 20 - 4 ) =

= 6 + 40 - 16

= 46 - 16 = 30

d)  42 : 7 + ( 6 + 6 ) : 2 - 24 : ( 5 + 3 ) =

= 6 + 12 : 2 - 24 : 8

= 6 + 6 - 3

= 12 - 3 = 9

e)  ( 25 + 20 ) : 5 - ( 19 + 5 ) : 8 =

= 45 : 5 - 24 : 8

= 9 - 3 = 6

f) 10 + ( 10 : 10 + 10 ) - ( 10 × 1 + 10 ) =

= 10 + ( 1 + 10 ) - ( 10 + 10 ) =

= 10 + 11 - 20

= 21 - 20 = 1