Question

Calculeaza efectuand intai operatiile din paranteza
a) 166+(219+535)-468=
(2036+894)-(693+1535=
9000-(2439+1946)+905=

b) (13x4)x3-2x(16x3)=
(90:3:5)x24-12x12=
35x42-(16x15)x0=

Answer 1

Răspuns:

a) 166 + ( 219 + 535 ) - 468 = 452

166 + 754 - 468 =

920 - 468 = 452

( 2036 + 894 ) - ( 693 + 1535 ) = 702

2930 - 2228 = 702

9000 - ( 2439 + 1946 ) + 905 = 5520

9000 - 4385 + 905 =

4615 + 905 = 5520

b) ( 13 × 4 ) × 3 - 2 × ( 16 × 3 ) = 60

52 × 3 - 2 × 48 =

156 - 96 = 60

( 90 : 3 : 5 ) × 24 - 12 × 12 = 0

( 30 : 5 ) × 24 - 12 × 12 =

6 × 24 - 12 × 12 =

144 - 144 = 0

35 × 42 - ( 16 × 15 ) × 0 = 1470

35 × 42 - 240 × 0 =

1470 - 0 = 1470

Answer 2

Răspuns:

a) 1166+(219+535)

=166+754-468

=920-468

=452

(2036+894)-(693+1535)

=2930-2228

=702

9000-(2439+1946)+905

=9000-4385+905

=4615+905

=5520

b) (13×4)×3-2×(16×3)

=52×3-2×48

=156-96

=60

(90:3:5)×24-12×12

=(30:5)×24-12×12

=6×24-12×12

=144-144

=0

35×42-(16×15)×0

=35×42-240×0

=1470-0

=1470