《2025年口算训练五年级数学上册人教版双色升级版》

1. 口算。
$0.54÷9=$0.06 $10÷2.5=$4
$2.6×0.3=$0.78 $2-0.7=$1.3
$0.66÷6.6=$0.1 $0.5÷2.5=$0.2
$0.7×0.6=$0.42 $0.2×0.5=$0.1
$1÷0.05=$20 $30×0.3×0.2=$1.8
$10a-a=$9a $4.78+(1.22-0.8)=$5.2
$1.2×100=$120 $85÷(1-0.9)=$850
$1÷0.125=$8 $2-0.28÷0.4=$1.3
$12.5×(8×1.2)=$120 $0.24+0.24÷2=$0.36
$0.04×10÷0.1=$4 $1÷8×10=$1.25
$(4+0.4)×5=$22 $7.2÷0.8÷0.9=$10
$3.3-2.3×0.1=$3.07 $1.5×(3.3-3.1)=$0.3
$2.5×7×0.4=$7 $5.21×0.9+0.1×5.21=$5.21
$2.3×9+2.3=$23 $1-0.15-0.75=$0.1
$5×0.3-0.3=$1.2 $9.12-0.12×0=$9.12
$1.8×0.5+0.1=$1 $3.6×0.5÷2=$0.9
$2.4×0.3÷4=$0.18 $5.7+5.7×9=$57
$1.7×(9.8-8.8)=$1.7 $0.9×0.4÷0.9=$0.4

答案： 0.06；4；0.78；1.3；0.1；0.2；0.42；0.1；20；1.8；9a；5.2；120；850；8；1.3；120；0.36；4；1.25；22；10；3.07；0.3；7；5.21；23；0.1；1.2；9.12；1；0.9；0.18；57；1.7；0.4