Răspuns:
I . 5×(5+2)=
5×7=35
Ii . 5×5+2×5=
25+10=35
I. 8×(6-3)=
8x3=24
Ii. 8x6-8×3=
48-24=24
I. (2+4)×9=
6x9=54
Ii. 2x9+4×9=
18+36=54
I. (5-3)×6=2×6=12
Ii. 5×6-3×6=
300-18=12
I. (3+2+4)×10=
9×10=90
Ii. 3×10+2×10+4×10=
30+20+40=90
I.(5+1+2)×9= 8×9=72
Ii. 5×9+1×9+2×9=
45+9+18= 72
I 8×(7-3)= 8×4=32
II. 8×7-3×8==
56-24=32
I. 10×(4+3-2)=10×5=50
II. 10×4+10×3-10-2=
40+30-20=50