Question

calculati: a) 10•[36•3-5•(72-12•5)] b) [27•5+4•(14•7-34)]•10 c) [44•5+9•(87-19•3)]•10 d) 10•[65•6-(35•4-40)•3]

ex:12 dau coroana​

Answer 1

Răspuns:

a)10•[36•3-5•(72-12•5)]=

=10•[108-5•(72-60)]=

=10•(108-5•12)=

=10•(108-60)=

=10•48=

=480

b)[27•5+4•(14•7-34)]•10=

=[135+4•(98-34)]•10=

=(135+4•64)•10=

=(135+256)•10=

=391•10=

=3910

c)[44•5+9•(87-19•3)]•10=

=[220+9•(87-57)]•10=

=(220+9•30)•10=

=(220+270)•10=

=490•10=

=4900

d)10•[65•6-(35•4-40)•3]=

=10•[390-(140-40)•3]=

=10•(390-100•3)=

=10•(390-300)=

=10•90=

=900

Answer 2

A) 10*[36*3-5*(72-12*5)]

10*[36*3-5*(72-60)]

10*[36*3-5*12]

10*[108-5*12]

10*[108-60]

10*48

480

B)[27*5+4*(14*7-34)]*10

[27*5+4*(98-34)]*10

[27*5+4*64]*10

[135+4*64]*10

[135+256]*10

391*10

3.910

C)[44*5+9*(87-19*3)]*10

[44*5+9*(87-57)]*10

[44*5+9*30]*10

[220+9*30]*10

[220+270]*10

490*10

4.900

D)10*[65*6-(35*4-40)*3]

10*[65*6-(150-40)*3]

10*[65*6-110*3]

10*[390-110*3]

10*[390-330]

10*60

600