Question

CALCULATI 900-276 ACUM URMATORUL EXERCITIU 8X3:6; 6X6:4; 72:9X3; 28:4X7 EFECTUEAZA A) 326X2+64:8 209X3-6X6:6 123X12+64:8:2 303X3-124X2+72:9 B) 9X10-(5X10+5X7) 36:9+(3X8-8X2) (36-6X6)X(123+63:7) (45:5+12):7:3 VERIFICA EGALITATILE 12X3X10-(100+35:5)=50X2+25X4+(309-200-8X7) ; 136-(9X9+5X6)=450-(320+6X7-3X8) COMPARA 10+2X4 SI 38-2X4 23+6X5 SI 5X6+32 9X9-6X6 SI 9X5 6X6:6+6 SI 2X2X3 SE DAU NR a=9,b=63:9,c=5X5. AFLA (c+c)X9-7 10c-9b+(c+aXb) Care sunt vecini nr 312 si 314 EFECTUEAZA 5X5X10-(13+7X8); 8+(8X8:8-8)X5; (12+50:10)-6X2 OFER COROANA

Answer 1

900-276=624

8x3:6=24:6=4
6x6:4=36:4=9
72:9x3=8x3=24
28:4x7=7x7=49

A) 326X2+64:8=
652+8=
660

209X3-6X6:6 =
627-36:6-
627-6=
621

123X12+64:8:2 =
1476+8:2=
1476+4=
1480

303X3-124X2+72:9=
909-248+8=
661+8=
669

B)
9X10-(5X10+5X7)=
90-(50+35)=
90-85=
5

36:9+(3X8-8X2)=
4+(24-16)=
4+8=
12

(36-6X6)X(123+63:7) =
(36-36)x(123+9)=
0x132=
0

(45:5+12):7:3=
(9+12):7:3=
21:7:3=
3:3=
1 

12X3X10-(100+35:5)=50X2+25X4+(309-200-8X7) 
36x10-(100+7)=100+100+(109-56)
360-107=200+53
253=253

136-(9X9+5X6)≠450-(320+6X7-3X8) 
136-(81+30)≠450-(320+42-24)
136-111≠450-(362-24)
25≠450-338
25≠112

10+2X4 SI 38-2X4
10+8 si 38-8
18 <  30

23+6X5 SI 5X6+32 
23+30 si 30+32
53 < 62

9X9-6X6 SI 9X5
81-36 si 45
45=45

6X6:6+6 SI 2X2X3 
36:12 si 4x3
3<12

a=9
b=63:9
c=5X5.
AFLA (c+c)X9-7 10c-9b+(c+aXb)
a=9
b=7
c=25

(c+c)x9-7=
(2x25)x9-7=
50x9-7=
450-7=
443

10c-9b+(c+axb)=
10x25-9x7+(25+9x7)=
250-63+(25+63)=
187+88=
275

Care sunt vecini nr 312 si 314
311 si 313
313 si 315

 5X5X10-(13+7X8)=
25x10-(13+56)=
250-69=
181

8+(8X8:8-8)X5=
8+(64-8)x5=
8+56x5=
8280=
288

(12+50:10)-6X2= 
(12+5)-12=
17-12=
5