Question

9 Efectuează în două moduri:
5x (5+2)
(3+2+4)×10
8×(6-3)
(5 +1+2) ×9
(2 + 4) 9
8×(7-3)
(5-3) x 6
10 x(4+3-2)​

Answer 1

a) 5(5+2)=5•7=35 <=>25+10=35

b) (3+2+4)10=9•10=90 <=> 30+20+40=90

c) 8(6-3)=8•3=24 <=> 48-24=24

d) (5+1+2)9=8•9=72 <=> 45+9+18=72

e) (2+4)9=6•9=54 <=> 18+36=54

f) 8(7-3)=8•4=32 <=> 56-24=32

g) (5-3)6=2•6=12 <=> 30-18=12

h) 10(4+3-2)=10•5=50 <=> 40+30-20=50