Question

Efectuaza urmatoarele operatii a) 800124 - 528 × 100 - ( 770 + 2 × 1000 ) = b) 1000000 : 1000 :100 :10 + 999999 : 3 = c) 900642 - 638 × 100 - ( 660 + 3 × 1000 ): 5 =

Answer 1

a) 800124 - 528 × 100 - ( 770 + 2 × 1000 ) =
800124 - 528 × 100 - ( 770 + 2000 ) = 
800124 - 528 × 100 - 2770 = 
800124 - 52800 - 2770= 
747324 - 2770=744554

b) 1000000 : 1000 :100 :10 + 999999 : 3 =
1000 :100 :10 + 999999 : 3 = 
10 :10 + 999999 : 3 = 
1 + 999999 : 3 = 1 + 999999 : 3 = 
1+333333=333334

c) 900642 - 638 × 100 - ( 660 + 3 × 1000 ): 5 =
900642 - 638 × 100 - ( 660 + 3000 ): 5 =
900642 - 638 × 100 - 3660: 5 =
900642 - 63800 -732 =
836842 -732= 836110

Answer 2

a)
 800124 - 528 × 100 - ( 770 + 2 × 1000 ) =744 554
=800 124 - 52 800 - ( 770 + 2 000)=
=747 324 - 2 770=
=744 554

 b)
1000000 : 1000 :100 :10 + 999999 : 3 =  333 334
=1 + 333 333=
=333 334

c)
 900642 - 638 × 100 - ( 660 + 3 × 1000 ): 5 = 836 110
=900 642 - 63 800 - ( 660 + 3 000) : 5 =
=836 842 - 3 660:5=
=836 842 - 732 =
=836 110