Toán Lớp 6: Thực hiện phép tính:
a) 84 : 4 + 39 : 37 + 50
b) (519 : 517 + 3) : 7
c) 15 + (–21)
d) (–21) + 32
e) 19 + (–37) +111+ (–63)
g) (–21) + 136 + 21
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Toán Lớp 6: Thực hiện phép tính:
a) 84 : 4 + 39 : 37 + 50
b) (519 : 517 + 3) : 7
c) 15 + (–21)
d) (–21) + 32
e) 19 + (–37) +111+ (–63)
g) (–21) + 136 + 21
Comments ( 2 )
XIN HAY NHẤT
$a)84:4+39:37+50=$$\frac{2666}{37}$
$b)(519:517+3):7=$$\frac{3621}{3619}$
$c)15+(–21)=-6$
$d)(–21)+32=11$
$e)19+(–37)+111+(–63)=30$
$g)(–21)+136+21=136$
a) 84 : 4 + 39 : 37 + 50
= 21 + 1,1 +50
= 21,1 + 50
= 71,1
b) ( 519 : 517 + 3 ) : 7
= (2070)/(517) : 7
= (2070)/(3619)
c) 15 + (-21) = -6
d) (-21) + 32 = 11
e) 19 + (–37) +111+ (–63)
= (19 + 111) + [-37 + (-63)]
=130 + ( -100)
= 30
g) (–21) + 136 + 21
=(-21 + 21 ) + 136
= 136