一、口算。
$0.84÷0.21=$
$1.3×0.6=$
$8.4÷0.4=$
$3.78×1000=$
$0.8-0.62=$
$1.44÷0.6=$
$0.8×0.7=$
$3÷0.15=$
$0.84÷0.21=$
4
$2.02+0.8=$2.82
$0.7×2.6=$1.82
$1.3×0.6=$
0.78
$4.2÷3=$1.4
$0.09÷0.45=$0.2
$8.4÷0.4=$
21
$29.4-15.09=$14.31
$2.7×50=$135
$3.78×1000=$
3780
$7.91÷0.7=$11.3
$0.16×4=$0.64
$0.8-0.62=$
0.18
$11.4÷3.8=$3
$0.19×0.5=$0.095
$1.44÷0.6=$
2.4
$12.6+7.08=$19.68
$41.6÷4=$10.4
$0.8×0.7=$
0.56
$1.05÷0.7=$1.5
$1.32×8=$10.56
$3÷0.15=$
20
$4.23÷100=$0.0423
$7.13×30=$213.9
答案
一、4 2.82 1.82
0.78 1.4 0.2
21 14.31 135
3780 11.3 0.64
0.18 3 0.095
2.4 19.68 10.4
0.56 1.5 10.56
20 0.0423 213.9
0.78 1.4 0.2
21 14.31 135
3780 11.3 0.64
0.18 3 0.095
2.4 19.68 10.4
0.56 1.5 10.56
20 0.0423 213.9
二、用竖式计算。(得数保留两位小数)
$83÷2.4$ $8.58÷0.32$ $17.5÷1.3$
$1.27÷0.345$ $10.05÷32$ $24.2÷3.23$
$83÷2.4$ $8.58÷0.32$ $17.5÷1.3$
$1.27÷0.345$ $10.05÷32$ $24.2÷3.23$
答案
二、34.58 26.81 13.46
3.68 0.31 7.49
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