Question

un moderator sau cineva priceput exercitiul 17​
a)256:32+3•(144-16):2
b)2014-2•(147+13•5):4
c)169:13+(214-17•4):2
d)143-25•(41-3•13)-144:36
e)[(1161:43+7439:43)•2]:10+25•73

Answer 1

Răspuns:

a)256:32+3•(144-16):2=8+3·128:2=8+192=200

b)2014-2•(147+13•5):4=2014-2·(147+65):4=2014-2·212:4=2014-106=2120

c)169:13+(214-17•4):2=13+(214-68):2=13+146:2=13+73=86

d)143-25•(41-3•13)-144:36=143-25·(41-39)-4=143-25·2-4=143-50-4=89

e)[(1161:43+7439:43)•2]:10+25•73=[(27+173)·2]:10+1825=

200·2:10+1825=40+1825=1865

Answer 2

Răspuns:

a) 200

b) 1908

c)86

d) 89

e) 1865

Explicație pas cu pas:

a) 8+ (3×128): 2

=8+ 384: 2

=8+ 192

=200

b) 2014- 2×(147+ 65): 4

=2014- 2× 212: 4

=2014- 424: 4

=2014- 106

=1908

c) 169: 13+ (214- 17× 4): 2

=13+ (214- 68): 2

=13+ 146: 2

=13+ 73

=86

d) 143- 25×(41- 3× 13)- 144: 36

=143- 25× (41- 39)- 4

=143- 25×2- 4

=143- 50- 4

=143- 54

=89

e) [(1 161: 43+ 7 439: 43)× 2]:10+ 25× 73

=(27+ 173)× 2: 10+ 1825

=200× 2: 10+ 1825

=400: 10+ 1825

=40+ 1825

=1865