Question

Calculați, respectând ordinea efectuării operațiilor: 72:8 +64:8; 9x8-6x7+70; ( 75 - 50 ): 5; 80:( 87-79); 100 (1 x 1 + 1x 9) - 90: 9. - ...​

Answer 1

Răspuns:

72:8+64:8=

9+8=

17

9×8-6×7+70=

72-42+70=

30+70=

100

(75-50):5=

25:5=

5

80:(87-79)=

80:8=

10

100-(1×1+1×9)-90:9=

100-(1+9)-90:9=

100-10-90:9=

100-10-10=

90-10=

80