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2. Efectuează: a) 456 + 306: 6 + 128 - (121 - 6): 5 = b) 731 + (651 - 479): 2 = c) (42 x 20 x 1): (3 x 10 : 5) = d) 500 - 270: 9 + (110 + 240) : 7 = e) (735 - 699) * 3+ 12 x 18 = f) (532 - 475) x 10 - 454 : 2 = g) 252 :4+ 320 + (3 x 10 x 7) = h) 958: (1 000 - 998) + 7 x 65 = i) 366 : 3 + 38 x 11 - 79 = j) (575:5+1 000 : 2): 5 - 118= k) 628 - (468 + 116) = 1) 10 x 25 + 75 x (555 - 549) = m) [(8 x 41 - 32) 2 - (101 - 97)]: 2 + 74 = 9. Va rogg mult până lunii​

Răspuns :

Stefan99123

Te ajut eu, dar as aprecia daca mi-ai da o coroana...

Tine minte ca intotdeauna, dintre adunare, scadere si impartire, inmultire se fac mai intai impartirile si inmultirile.

a) 456 + 306 : 6 + 128 - ( 121 - 6 ) : 5 =

456 + 51 + 128 - 115 : 5 =

507 + 128 - 23 =

635 - 23 =

612

b) 731 + ( 651 - 479 ) : 2 =

731 + 172 : 2 =

731 + 86 =

817

c) ( 42 x 20 x 1 ) : ( 3 x 10 : 5 ) =

   840 : 6 =

   140

d) 500 - 270 : 9 + ( 110 + 240 ) : 7 =

500 - 30 + 350 : 7 =

470 + 50 =

520

e) ( 735 - 699 ) x 3 + 12x18 =

36 x 3 + 216 =

108 + 216 =

324

f) ( 532 - 475 ) x 10 - 454 : 2 =

57 x 10 - 227 =

570 - 227 =

343

g) 252 : 4 + 320 + ( 3 x 10 x 7 ) =

63 + 320 + 210 =

383 + 210 =

593

h) 958 : ( 1000 - 998 ) + 7 x 65 =

958 : 2 + 455 =

479 + 455 =

934

i) 366 : 3 + 38 x 11 - 79 =

133 + 418 - 79 =

551 - 79 =

472

j) ( 575 : 5 + 1000 : 2 ) : 5 - 118 =

( 115 + 500 ) : 5 - 118 =

615 : 5 - 118 =

123 - 118 =

5

k) 628 - ( 468 + 116 ) =

628 - 584 =

44

l) 10 x 25 + 75 x ( 555 - 549 )

250 + 75 x 1 =

250 + 75 =

325

m) [( 8 x 41 - 32 ) x 2 - ( 101 - 97 )] : 2 + 74 =

( 296 x 2 - 4 ) : 2 + 74 =

588 : 2 + 74 =

294 + 74 =

388

Sper ca te-am ajutat!

Sjsuejjdhs

Răspuns:

A.)

456+306:6+128-(121-6):5=

=456+51+128-115:5

=456+51+128-23

=612

B.)

731+(651-479):2=

=731+172:2

=731+86

=817

C.)

(42×20×1):(3×10:5)=

=840:6

=140

D.)

500-270:9+(110+240):7=

=500-30+350:7

=500-30+50

=520

E.)

(735-699)×3+12×18=

=36×3+216

=108+216

=334

F.)

(532-475)×10-454:2=

=57×10-227

=570-227

=343

G.)

252+4+320+(3×10×7)=

=252+4+380+210

=846

H.)

958:(1 000-998)+7×65=

=958:2+455

=479+455

=934

I.)

366:3+38×11-79=

=122+418-79

=461

J.)

(575:5+1 000:2):5-118=

=(115+500):5-118

=615:5-118

=123-118

=5

K.)

628-(467+116)=

=628-351

=277

L.)

10×25+75×(555-549)=

=250+75×6

=250+450

=700

M.)

[(8×41-32)2-(101-97)]:2+74=

=[(328-32)×2-4]:2+74

=(296×2-4):2+74

=(592-4):2+74

=588:2+74

=294+74

=368

SUCCES!!!<3

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