2×5= 4.2-1.8= 12.5×8= 3.54×10= 5.2+0.8=
      2.15+1.85= 0÷0.25= 2÷0.4= 9÷6= 70×50=
      分析:本題運(yùn)用小數(shù)乘除法的計(jì)算法則進(jìn)行計(jì)算即可.小數(shù)的加減中注意小數(shù)點(diǎn)的位置.
      解答:
      解:2×5=10, 4.2-1.8=2.4, 12.5×8=100, 3.54×10=35.4, 5.2+0.8=6,
      2.15+1.85=4, 0÷0.25=0, 2÷0.4=5, 9÷6=1.5, 70×50=3500.
      點(diǎn)評(píng):本題運(yùn)用小數(shù)乘除法的計(jì)算法則進(jìn)行計(jì)算即可.
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