Toán a)(-5):8.(-2).3 b)125-(-75) +32-(48+32) c) 3.(-4)^2 +2.(-5)-20 05/12/2021 By Elliana a)(-5):8.(-2).3 b)125-(-75) +32-(48+32) c) 3.(-4)^2 +2.(-5)-20
Đáp án: $a)(-5):8.(-2).3$ $= -0,625 . (-6)$ $= 3,75$ $b)125-(-75) +32-(48+32)$ $= 125 – (-75) + 32 – 80$ $= 200 + (-48)$ $= 152$ $c) 3.(-4)² +2.(-5)-20$ $= 3.16+(-10)-20$ $= 48 + (-10) – 20$ $= 38 – 20$ $= 18$ BẠN THAM KHẢO NHA!!! Trả lời
Bạn tham khảo : $(a,)$ $(-5) : 8 . (-2) .3$ $= \dfrac{-5}{8}$ $. (-6)$ $= \dfrac{30}{8}$ $b,$ $125 – (-75) + 32 – (48+32)$ =$125 + 75 + 32 – 80$ =$ 200 + 32 – 80$ =$232-80$ =$152$ $c,$ $3 . (-4)^2 + 2.(-5) – 20$ $= 3 . 16 + (-10) – 20$ $= 48 + (-10) – 20$ $= 38-20$ $=18$ Trả lời
Đáp án:
$a)(-5):8.(-2).3$
$= -0,625 . (-6)$
$= 3,75$
$b)125-(-75) +32-(48+32)$
$= 125 – (-75) + 32 – 80$
$= 200 + (-48)$
$= 152$
$c) 3.(-4)² +2.(-5)-20$
$= 3.16+(-10)-20$
$= 48 + (-10) – 20$
$= 38 – 20$
$= 18$
BẠN THAM KHẢO NHA!!!
Bạn tham khảo :
$(a,)$
$(-5) : 8 . (-2) .3$
$= \dfrac{-5}{8}$ $. (-6)$
$= \dfrac{30}{8}$
$b,$
$125 – (-75) + 32 – (48+32)$
=$125 + 75 + 32 – 80$
=$ 200 + 32 – 80$
=$232-80$
=$152$
$c,$
$3 . (-4)^2 + 2.(-5) – 20$
$= 3 . 16 + (-10) – 20$
$= 48 + (-10) – 20$
$= 38-20$
$=18$