(-4) . (+125) . (-25) . (-6) . (-8)
= [(-4) . (-25)] . [(+125) . (-8)] . (-6)
= 100 . (-1000) . (-6)
= (-100000) . (-6)
= 600000
(-4).(+125).(-25).(-6).(-8)
=[(-4).(-25)].[(-8).(+125)].(-6)
=100.1000.(-6)
=100.(-6000)
=-600000
(-4) . (+125) . (-25) . (-6) . (-8)
= [(-4) . (-25)] . [(+125) . (-8)] . (-6)
= 100 . (-1000) . (-6)
= (-100000) . (-6)
= 600000
(-4).(+125).(-25).(-6).(-8)
=[(-4).(-25)].[(-8).(+125)].(-6)
=100.1000.(-6)
=100.(-6000)
=-600000
( -4).(+125).(-25).(-6).(-8)
(-4).125.(-25).(-6).(-8)
Tính nhanh: (-4).(+125).(-25).(-6).(-8)
[-4].125.[-25].[-6].[-8]
8. Bỏ dấu ngoặc rồi tính:
a) ( 17 – 229) + ( 17 - 25 + 229) ; b) ( 125 – 679 + 145) – ( 125 – 679 )
9. Tìm x biết: a) 15 – ( 4 – x) = 6 ; b) - 30 + ( 25 – x) = - 1 ;
c) x – ( 12 – 25) = -8 ; d) ( x – 29 ) – ( 17 – 38 ) = - 9
10. Tìm số nguyên x biết: a) x – 5 = - 1 ; b) x + 30 = - 4; c) x – ( - 24) = 3 ; d) 22 – ( - x ) = 12; e) ( x + 5 ) + ( x – 9 ) = x + 2 ; f) ( 27 – x ) + ( 15 + x ) = x – 24 .
-4.+125.-25.-6.-8
tính nhanh
(-4).(+125).(-25).(-6).(-8)
1) (-6 - 2) . (-6 + 2)
2) 627 + 125 + (-627) + |-46| -21
3) (-25) + 30 + (-16) + 25 + (-4)
4) 75 - 5.(15 - 40) - (-60)
5) |31 - 17| - |15 - 52|
6) 13 - 18 - (-42) - 15
7) 369.4.[(- 5) + 4. (-8) ]
8) \(\left(-8\right)^3\) : \(\left(-8\right)^2\) + 8
9) 72 : (-6 . 2 + 4)
tinh
(-4).(+125).(-25).(-6).(-8)
(-98).(1-246)-246.98
63.(-25)+25.(-23)