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12. Calculează:
a) 26 X (370 x 100 - 100 x 229): 100;
b) 2 x 320 + 331 x 2 + 2 x 149;
c) 2 x 428- 2 x 117 + 2 x 190;
d) 1512:54 + 125:5;
e) (19 500 + 6 250): 25.​


Răspuns :

Răspuns:

Salutare!

a)

26×(370 x 100 - 100 x 229):100=

26×(37 000-22 900):100=

26×14 100:100=

366 600:100=

3 666

b)

2 x 320 + 331 x 2 + 2 x 149=

640+662+298=

1302+298=

1 600

c)

2 x 428- 2 x 117 + 2 x 190=

856-234+380=

622+380=

1 002

d)

1512:54+125:5=

28+25=

53

e)

(19 500+6 250): 25=

25 750:25=

1 030