1.23÷3=0.8×11=1-0.75=1.7×0.4=0.36÷12=1.6+0.38=1.2÷0.3=0.75×4=15×0.4=2.14-0.9=4×0.25

1.23÷3=0.8×11=1-0.75=1.7×0.4=0.36÷12=1.6+0.38=1.2÷0.3=0.75×4=15×0.4=2.14-0.9=4×0.25=10÷2.5=0.4×52=1.6×0.4=9.6÷6=4.3-0.4=7-6.2=0.86-0.3=8.8÷2.2=2.6÷0.2=0.15×3=0.9÷0.45=0.27÷3=0.51+1.7=0.6÷0.5=0.125×8=0.38×1000=6.8-1.7=2.4×0.2=32.8+19=0.56÷14=1÷0.05=6÷12=0.14×5=3×1.4=4.9÷0.7=0.4÷8=6.3+3.7=3.5×0.2=0.2×12.6×5=8.4÷4.2=2.4×0.5=0÷3.5×0.2=0×9.7+2.3=1.6×9+1.6=3.8+1.2=4.8÷0.3=530+270=7.6÷3.8=92÷2.3=9.6-1.6=7.2+2.8=2.63+0.37=0.67+1.24=0.3×101=
?0.25×8=
?16÷1.6=
?26.1-3.5-7.5=
???

解：
1.23÷3=0.410.8×11=8.81-0.75=0.251.7×0.4=0.680.36÷12=0.031.6+0.38=1.981.2÷0.3=40.75×4=315×0.4=62.14-0.9=1.244×0.25=110÷2.5=40.4×52=20.81.6×0.4=0.649.6÷6=1.64.3-0.4=3.97-6.2=0.80.86-0.3=0.568.8÷2.2=42.6÷0.2=130.15×3=0.450.9÷0.45=20.27÷3=0.090.51+1.7=2.210.6÷0.5=1.20.125×8=10.38×1000=3806.8-1.7=5.12.4×0.2=0.4832.8+19=51.80.56÷14=0.041÷0.05=206÷12=0.50.14×5=0.73×1.4=4.24.9÷0.7=70.4÷8=0.56.3+3.7=103.5×0.2=0.70.2×12.6×5=12.68.4÷4.2=22.4×0.5=1.20÷3.5×0.2=00×9.7+2.3=2.31.6×9+1.6=163.8+1.2=54.8÷0.3=16530+270=8007.6÷3.8=292÷2.3=409.6-1.6=87.2+2.8=102.63+0.37=30.67+1.24=1.910.3×101=30.30.25×8=216÷1.6=1026.1-3.5-7.5=15.1?解析分析：根据小数的加减乘除及四则混合运算进行计算即可．点评：口算题目，要求快速准确，能用简便方法的要用简便方法．

这个问题我还想问问老师呢