Toán Lớp 6: a/ [ (-8) + (-7) ]+ (-10) b/ 555 – ( – 333) – 100 – 80
c/ – ( – 229) + (-219) – 401 + 12 c/ 300 – (-200) – (- 120) + 18
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Toán Lớp 6: a/ [ (-8) + (-7) ]+ (-10) b/ 555 – ( – 333) – 100 – 80
c/ – ( – 229) + (-219) – 401 + 12 c/ 300 – (-200) – (- 120) + 18
Comments ( 2 )
Giải đáp + Lời giải và giải thích chi tiết:
a/ $[(-8) + (-7)] + (-10)$
$= -15 + (-10)$
$= -25$
b/ $555 – (-333) – 100 – 80$
$= 555 + 333 – 100 – 80$
$= 708$
c/ $-(-229) + (-219) – 401 + 12$
$= 229 – 219 – 401 + 12$
$= -379$
d/ $300 – (-200) – (-120) + 18$
$= 300 + 200 + 120 + 18$
$= 638$
a) [( -8 ) + ( -7 )] + ( -10 )
= -15 + ( -10 )
= -25
b) 555 – ( -333 ) – 100 – 80
= 555 + 333 – 100 – 80
= 708
c) – ( -229 ) + ( -219 ) – 401 + 12
= 229 – 219 – 401 + 12
= -379
d) 300 – (-200) – (- 120) + 18
= 300 + 200 + 120 + 18
= 638