Question

2
1 Efectuează:
[(4:4 + 4):5+9] X 234 =
[(50:10+25) +25]:5 =
[(3+3) 20] : 120 +9x11 =
793 + 200:10 - [76 + (293-209)] =
[(9:9+4):5+9] x 234 + 500:25 + 15 X 4 =
[420:(160 - 1 000 : 8) + 24 x 5] x 10 =
[20 x (8 - 200:50) + 5 x 4]: 10+25 x 10 =
-
-​

Answer 1

Explicație pas cu pas:

1. [(4:4+4):5+9]×234=

=[(1+4):5+9]×234=

=(5:5+9)×234=

=(1+9)×234=

=10×234=

=2340

2. [(50:10+25)+25]:5=

=[(5+25)+25]:5=

=(30+25):5=

=55:5=

=11

3. [(3+3)×20]:120+9×11=

= (6×20):120+99=

=120:120+99=

=1+99=

=100

4. 793+200:10-[76+(293-209)]=

=793+20-(76+84)=

=813-160=

= 653

5. [(9:9+4):5+9]×234+500:25+15×4=

=[(1+4):5+9]×234+20+60=

=(5:5+9)×234+80=

=(1+9)×234+80=

=10×234+80=

=2340+80=

=2420

6. [420:(160-1000:8)+24×5]×10=

=[420:(160-125)+120]×10=

=(420:35+120)×10=

=(12+120)×10=

=132×10=

=1320

7. [20× (8-200:50)+5×4]:10 +25× 10=

=[20×(8-4)+20]:10+250=

=(20×4+20):10+250=

=(80+20):10+250=

=100:10+250=

=10+250=

=260