Bài 2
a, 2.3:3+60.4-10:2
=6:3+60.4-10:2
=2+240-5
=242-5
= 237
b,18-8:(15-13)
=18-8:2
=18-4
=14
c,50-[(20-8):2+44]
=50-[12:2+44]
=50-[6+44]
=50-50
=0
d,3500-{50.[(20-8):2+44]}
=3500-{50.[16:2+44]}
=3500-{50.[8+44]}
=3500-{50.52}
=3500-2600
=900
e,1727+[6993:111+(148-95).4-2]
=1727+[6993:111+63.4-2
=1727+[63+252-2]
=1727+[315-2]
=1727+313
=2040
f,600:{450:[450-(4.125-8.25)]}
=600:{450:[450-(500-200)]}
=600:{450:[450-300)]}
=600:{450:150}
=600:3
=200