16÷2.5
=16/(2.5)
=(10*1.6)/2.5
=(10/2.5)*1.6
=4*1.6
=6.4
95.6×1.8+0.44×18
=95.6*1.8+4.4*1.8
=1.8*(95.6+4.4)
=1.8*100
=180
10.47-3.4+6.6
=10.4+0.07-3.4+6.6
=(10.4-3.4)+(0.07+6.6)
=7+6.67
=13.67
7.28-3/8+4.72-5/8
=(7.28+4.72)-(3/8+5/8)
=12-1
=11
2.5×32×1.25
=(2.5*4)*(1.25*8)
=10*10
=100