Răspuns:
m)
2 + (3 x 4:6 x 50 - 50) + (50 : 10 x 6:3+ 20)
2+(12:6x50-50)+(5x2+20)
2+(100-50)+(10+20)
2+50+30=82
n)
15 + 3 x (4 x 3 - 45: 9) - 16 =
15+3x(12-5)-16=
15+3x7-16=
15+21-16=36-16=20
o)
25 (160 - 30 x 5) - 8 - (24 + 6 : 6) =
ce semn este după 25
p)
(600 - 393) x 350 - 87 X (29 743:49) =
207x350-87x607=
72 450-52 809=19 641
q)
84 x 10 : (5 x 84 - 120 x 3-54) =
840:(420-360-54)=
840:(60-54)=
840:6=140
r)
(810 - 150 x 3): 10 + 272 : 8 + 4 x (35 +90) =
(810-450):10+34+4x125
360:10+34+500=
36+34+500=570
s)
830 - (820: 4:5 +59) x 8 =
830-(205:5+59)x8=
830-(41+59)x8=
830-100x8=
830-800=30
t)
1 000 - (241 x 4-64): 100 =
1 000-(964-64):100=
1 000-900:100=
1 000-9=991
