Question

Calcule as operações a seguir.

a. 2,78 + 0,425 - 0,042

b. 2,44 : 1,20

c. 1,75 + 0,47 +  0,230

d. 0,75 x1,44 + 1​

Answer 1

a) 2,78 +

  0,425

--------------

3,205 -

0,042

----------

3,163

b)2,44/1,20

244/120

122/60

61/30

2.1/30

2,0333

c)

1,75+

0,47

0,230

------------

2,450

d)0,75.1,44 +1

75/100.144/100+1

3/4.36/25+1

108/100+1

54/50+1

27/25+1

27/25+25/25

52/25

208/100

2,08