Question

va rog ajutați-mă dau coroana ​

Answer 1

2.

a)

(15+9)•10= 24•10=240

sau

(15+9)•10=15•10+9•10=150+90=240

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100• (23+341)=100•364=36.400

sau

100•(23+341)=100•23+100•341=

=23.00+34.100=36.400

b)1000•(21+314) =1000•325=325.000

sau

1000•(21+314)=1000•21+1000•314=

=21.000+314.000=325.000

-----

(543-207)•100=336•100=33.600

sau

(543-207)•100=543•100-207•100=

=54.300-20.700=33.600

c)

(905-327)•1000= 578•1000=578.000

sau

(905-327)•1000=905•1000-327•1000=

=905.000-327.000=578.000

-----

100•(9230-8103)=100• 1127=112.700

sau

100•(9230-8103)=9230•100-8103•100

=923.000-810.300=112.700

3.

5495= 5•1000+4•100+9•10+5

9327 = 9•1000+3•100+2•10+7

4508= 4•1000+5•100+8