152-68=84, 5.2+8=13.2, 1.3×40%=0.52, 0.45÷1.5=0.3,
[5/8+
1
3]=[23/24], 18÷
2
3=27, 43=64, 8.5b+5b=13.5b.故答案为:84,13.2,0.52,0.3,[23/24],27,64,13.5b.
152-68=84, 5.2+8=13.2, 1.3×40%=0.52, 0.45÷1.5=0.3,
[5/8+
1
3]=[23/24], 18÷
2
3=27, 43=64, 8.5b+5b=13.5b.故答案为:84,13.2,0.52,0.3,[23/24],27,64,13.5b.