Question

Va rog sa ma ajutati, multumesc

Answer 1

1000 + 2 × ( 25 + 52 ) =

= 1000 + 2 × 77

= 100 + 154

= 254

3000 - ( 2100 - 20 × 100 ) : 10 =

= 3000 - ( 2100 - 200 ) : 10 =

= 3000 - 1900 : 10 =

= 3000 - 190 =

= 1100

6 × ( 30 × 50 - 24 × 24 ) - 800 =

= 6 × ( 1500 - 24 × 24 ) - 800 =

= 6 × ( 1500 - 576 ) - 800 =

= 6 × 924 - 800 =

= 5544 - 800 =

= 4744

Answer 2

1)
1000+2×(25+52)=1000+2×77=1000+154=1154
2)
3000-(2100-20×100):10=3000-(2100 -2000 ):10 = 3000 -100 :10 = 3000- 10 =2990
3)
6×(30×50-24×24)-800=6×{1500-576)-800=6×924-800=5544-800=4744