valendo 30 pontos a)1/2 +2/3 b)3/5+7/6-20/9 c)(1/2).(3/7)+6/28-13/14 d)(3/10+7/30 dividido [ 5-17/.... Pergunta de ideia demelissa2014silva

melissa2014silva @melissa2014silva

October 2020 2 91 Report

valendo 30 pontos
a)1/2 +2/3
b)3/5+7/6-20/9
c)(1/2).(3/7)+6/28-13/14
d)(3/10+7/30 dividido
[ 5-17/15+(-4/3-24/9)]
e)0.4+0.274+48.35+0.976
f)0.19-2+(4.2-5.1) ao quadrado +[(16.1,1)+(2.4-20)]
g)0,555...-1,222...
h)0,777...+2,666...+0,555 ...
i)3 3/4+(0,6-3,1) ao quadrado
j)0,515151.../0,333...+16/11

clarinhapestana


valendo 30 pontos
a)1/2 +2/3 = 3+4 ==> 7
6 6

b)3/5+7/6-20/9 = 3 + 7 - 20 = 54+105-200 ==> - 41
5 6 9 90 90

c)(1/2).(3/7)+6/28-13/14 = 3 + 6 -13 ==> 6+6-26 ==> - 14
14 28 14 28 28

d) (3/10+7/30)    =      (9+7)/30 =   16/30
[ 5-17/15+(-4/3-24/9)] [5-17 +( -4-24)] [75-17+(-12-24)        15   3 9   15 9

16/30 = 16/30    = 16/30    = 16/30 = - 16 x 45 ==> - 720 ==> - 4
58 +(-36) 58 - 36 174-180 - 6 30 6 180
   15 9 15 9 45 45

e)0.4+0.274+48.35+0.976 = 50

f)0.19-2+(4.2-5.1)²+[(16.1,1)+(2.4-20)]
-1,81+(3)²+[17,6-12]
-1,81+9+5,6
12,79

g)0,555...-1,222...
5 - 11 = - 6 ou - 2
9 9 9 3

h)0,777...+2,666...+0,555 ...
7 + 24 + 5 = 36 ==> 4
9 9 9 9

i)3 3/4+(0,6-3,1)²
3 3 + ( -2,5)² ==> 15 + 6,25 ==> 15+25 ==> 40 ==> 10
4 4 4 4

j)0,515151.../0,333...+16/11
51 : 3 + 16 ==> 51 x 9 + 16 ==> 17 + 16 ==> 33 ==> 3
99 9 11 99 3 11 11 11 11

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