Question

EXE
1. Efectuează:
a) 503 - 127 - 205 + 189 - 64;
21 189 + 16 347 - 20 508;
b) 185 * 25 * 36 : 15 : 20;
895: 5 * 36:9 29;
c) 26 + 360 : (3 x 50 x 5: 750);
105 - 2* (11 + 5*3-(4 + 8)];
d) [(609: 3 +72:3) * 3 - 75 * 8] 2;
3 (90 : 45 + 2 * (69:13 + 10)] + 105: 3.​

Answer 1

Explicație pas cu pas:

1. a) 503-127-205+189-64=

=376-205+189-64

=171+189-64

=360-64

=296

21189+16347-20508=

=37536-20508

=17028

b) 185*25*36:15:20=

=4625*36:15:20

=166500:15:20

=11100:20

=555

895:5*36:9*29=

=179*36:9*29

=6444:9*29

= 716*29

= 20764

c) 26+360:(3*50*5:750)=

=26+360:(150*5:750)

=26+360:(750:750)

=26+360:1

=26+360

=386

105-2*[11+5*3-(4+8)]=

= 105-2*(11+15-12)

=105-2*(26-12)

=105-2*14

=105-28

=77

d)[(609:3+72:3)*3-75*8]*2=

=[(203+24)*3-600]*2

=(227*3-600)*2

=(681-600)*2

=81*2

=162

3*[90:45+2*(69:13+10)]+105:3=

!! aici cred că este o greșeală 69:13 nu da un număr natural.