Question

Q. Calculati:
a) 9 x (7+5);2 8
12 x (9-5);
10x (8 + 7);
c) 81–2 x (16-9);
87+90:(11-2);
(7+8)x(5+4);
b) 7+9x6;
9-0x9;
8+6x8;
d) 9+48 x (54+46);
8+77:(98–87);
(9+7):(9-7).
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Answer 1

Răspuns:

9×(7+5)=9×12=108

10×(8+7)=10×13=140

c)81-2×(16-9)=81-2×7=81-14=67

87+90:(11-2)=87+90:9=87+10=97

(7+8)×(5+4)=13×9=117

b)7+9×6=7+54=61

9-0×9=9×9=81