Tính nhanh:
a) (-4).(+3).(-125).(+25).(-8)
b) (-67).(1 – 301 ) – 301. 67
a) (-4).(+3).(-125).(+25).(-8) = (+3).[(-4).(+25)].[(-8).(-125)]
= 3.(-100).1000 = -300000
b) (-67).(1 – 301 ) – 301. 67 = (-67).1 + 67.301 – 67. 301 = -67
-- Mod Toán 6
Copyright © 2021 HOCTAP247