Đáp án:
Giải thích các bước giải:
a)367+ (-30) +1672+(-337)
=337+1672+(-337)
=[337+(-337)]+1672
=0 +1672
=1672
b)(-299)+(-300)+(-101)
=(-299)+(-101)+(-300)
=(-400)+(-300)
=-700
c)435+(-43)+(-483)+(-57)+383+(-415)
=392+(-483)+(-57)+383+(-415)
=(-91)+(-57)+383+(-415)
=(-148)+383+(-415)
=235+(-415)
=-180
d)1316+317-1216-315-85
=1316-1216+317-315-85
=100+2-85
=102-85
=17
e)-4x2x6x25x(-7)x5
=-4x25x2x5x6x(-7)
=-100x10x-42
=-1000x-42
=42000
f)(-32)x125x(-9)x (-25)
=-4000 x 225
=-900000
g)(0-3879-3879-3897-3879)x (-25)
=(-3879-3879-3897-3879)x(-25)
=(-7758-3897-3879)x(-25)
=(-11655-3879)x(-25)
=(-15534)x(-25)
=388350
h)47x69-31x(-47)
=47x69+31x47
=47x(69+31)
=47x100
=4700
i)16x(38-2)-38x(16-1)
=16x36-38x15
=576-570
=6
j)(-41)x(59+2)+59x(41-2)
=(-41)x61+59x39
=-2501+2301
=-200
k)19x25-9x95+38x15
=475-855+570
=-380+570
=190
