a, (25,7+ 14,3)+9,48= 49.48
b, (3,69+ 2,31)+ 8,24=14,24
c,(8,65+1,35)+(0,4+7,6)=18
d, (5,92+4,08)+(0,44+5,56)=15
a) 25 ,7 + 9 ,48 + 14,3
= (25,7 + 14,3) + 9,48
= 40 + 9,48
= 49,48
b) 8,24 + 3,69 + 2 ,31
= 8,24 + (3,69 + 2,31)
= 8,24 + 6
= 14,24
c ) 8,65 + 7,6 + 1,35 + 0,4
= (8,65 + 1,35) + (7,6 + 0,4)
= 10 + 8
= 18
d ) 5,92 + 0,44 + 5,56 + 4,08
= (5,92 + 4,08) + (0,44 + 5,56)
= 10 + 6
= 16
a)
25,7 + 9,48 + 14,3
= 25,7 + 14,3 + 9,48
= 40 + 9,48
= 49,48
b)
8,24 + 3,69 + 2,31
= 8,24 + ( 3,69 + 2,31 )
= 8,24 + 6
= 14,24
c)
8,65 + 7,6 + 1,35 + 0,4
=( 8,65 + 1,35 ) + ( 7,6 + 0,4 )
= 10 + 8
= 18
d)
5,92 + 0,44 + 5,56 + 4,08
= ( 5,92 + 4,08 ) + ( 0,44 + 5,56 )
= 10 + 6
= 16
a)
\(25,7+9,48+14,3\)
\(=\left(25,7+14,3\right)+9,48\)
\(=40+9,48\)
\(=49,48\)
b)
\(8,24+3,69+2,31\)
\(=8,24+\left(3,69+2,31\right)\)
\(=8,24+6\)
\(=14,24\)
c)
\(8,65+7,6+1,35+0,4\)
\(=\left(8,65+1,35\right)+\left(7,6+0,4\right)\)
\(=10+8\)
\(=18\)
d)
\(5,92+0,44+5,56+4,08\)
\(=\left(5,92+4,08\right)+\left(0,44+5,56\right)\)
\(=10+6\)
\(=16\)
a) 25 ,7 + 9 ,48 + 14,3
= 25,7 + 14,3 ) + 9,48
= 40 + 9,48
= 49,48
b) 8,24 + 3,69 + 2 ,31
= 3,69 + 2,31 ) + 8,24
= 6 + 8,24
= 14,24
c ) 8,65 + 7,6 + 1,35 + 0,4
= 8,65 + 1,35 ) + ( 7,6 + 0, 4 )
= 10 + 8
= 18
d ) 5,92 + 0 ,44 + 5,56 + 4,08
= 5,92 + 4,08 ) + ( 0 ,44 + 5,56 )
= 10 + 6
= 16
a , 25,7 + 9,48+ 14,3
=( 25, 7 + 14, 3 ) + 9,48
= 40 + 9,48
= 49 , 48
b, 8,24+ 3,69 + 2,31
= ( 3,69 + 2,31 ) + 8,24
= 6 + 8,24
= 14,24
c, 8,65 + 7,6 + 1,35 + 0,4 d, 5 , 92 + 0,44 + 5,56 + 4 ,08
=( 8,65 + 1,35 ) + ( 7,6 + 0,4 ) = ( 5,92 + 4 , 08) + ( 0,44+5,56)
= 10 + 8 = 10 + 6
= 18 = 16
a) 25,7+9,48+14,3=(25,7+14,3)+9,48=40+9,48=49,48
b) 8,24+3,69+2,31=8,24+(3,69+2,31)=8,24+6=14,24
c) 8,65+7,6+1,35+0,4=(8,65+1,35)+(7,6+0,4)=10+8=18
d) 5,92+0,44+5,56+4,08=(5,92+4,08)+(0,44+5,56)=10+6=16