2
Află valoarea necunoscutelor şi completează rebusul:
• (783 + 217)-( 234 + 3 x 106 ) + a = 704
. b-(25 x 4 + 80 ): 5 = 155
• 31x27:3 x 10 + ( 96 + c)= 3 424
. [d-( 111 x 50 - 883 ) ) + 2 x 71 x 3 = 2 138
. [(910-23 x 35 ): 15 ) + ex 80 = 487
fx7:60 + ( 64 + 36):25 = 11
• 27 x 103 +7 202:26-8= 1629
h-[(69x3): (4500:500) x 23 ) = 700
• ix3+(9x2x1 - 18:2+ 77:7):5-1000 : 100 = 0
• [(-25)x64 - 12]:4:5= 25​

1. (783+217)-(234+3*106)+a=704
1000-552+a=704
448+a=704
a=704-448
a=256

2. b-(25*4+80):5=155
b-180:5=155
b-36=155
b=155+36
b=191

3. 31*27:3*10+(96+c)=3424
2790+(96+c)=3424
96+c=3424-2790
96+c=634
c=634-96
c=538

4. [d-(111*50-883)]+2*71*3=2138
(d-4667)+426=2188
d-4667=2188-426
d-4667=1762
d=1762+4667
d=6429

5. [(910-23*35):15]+e*80=487
7+e*80=487
e*80=487-7
e*80=480
e=480:80
e=6

6. f*7:60+(64+36):25=11
f*7:60+4=11
f*7:60=7
f*7=7*60
f*7=420
f=420:7
f=60

7. 27*103+7202:26-8=1629
2781+277-8=1629
3050=1629
F

8. h-[(69*3):(4500:500)*23]=700
h-(23:9*23)=700
h-23=700
h=700+23
h=723

9. i*3+(9*2*1-18:2+77:7):5-1000:100=0
i*3+(18-9+11):5-10=0
i*3+4-10=0
i*3=6
i=6:3
i=2

10. [(-25)*64-12]:4:5=25
(-1612):0,8=25
-2015=25
F