1. 口算。
$0.25×4=$
$0×36.78=$
$0.25×4=$
1
$\quad8.1÷9=$0.9
$\quad0.125×8=$1
$0×36.78=$
0
$\quad45.6÷0.3=$152
$\quad80.6÷0.2=$403
答案
1.
$0.25 × 4 = 1$
$8.1 ÷ 9 = 0.9$
$0.125 × 8 = 1$
$0 × 36.78 = 0$
$45.6 ÷ 0.3 = 152$
$80.6 ÷ 0.2 = 403$
$0.25 × 4 = 1$
$8.1 ÷ 9 = 0.9$
$0.125 × 8 = 1$
$0 × 36.78 = 0$
$45.6 ÷ 0.3 = 152$
$80.6 ÷ 0.2 = 403$
2. 用竖式计算。
$3.9×5= $ $\quad8.9×21= $
$27÷3.6= $ $\quad16.2÷4.5= $
$4.8×0.49= $ $\quad0.756÷0.42= $
$2.5×3.8= $ $\quad63.6÷5.3= $
$3.9×5= $ $\quad8.9×21= $
$27÷3.6= $ $\quad16.2÷4.5= $
$4.8×0.49= $ $\quad0.756÷0.42= $
$2.5×3.8= $ $\quad63.6÷5.3= $
答案
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