《2025年口算训练五年级数学上册人教版双色升级版》

答案： 47.88   1.82      0.125   3.344   14.49

$43×0.01=$
$7.89×1=$
$0.1×0.71=$
$40×0.8=$
$0.22×3=$
$4.1×0.03=$
$0.8×0.8=$
$0.25×0.5=$
$90×0.01=$
$25×0.07=$
$1.4×0.4=$
$0.4×1.4=$
$3.6×0.2=$
$0.2×3.6=$
$5.6×0.5=$
$0.5×0.72=$
$0.06×4=$
$0.08×0.04=$
$1.25×0.06=$
$6.4×0.8=$
$0.9×7.25=$

答案： 解析：这些题目都是基础的小数乘法口算题。根据小数乘法的规则，我们可以直接计算出每个式子的结果。
答案：
$43 × 0.01 = 0.43$
$7.89 × 1 = 7.89$
$0.1 × 0.71 = 0.071$
$40 × 0.8 = 32$
$0.22 × 3 = 0.66$
$4.1 × 0.03 = 0.123$
$0.8 × 0.8 = 0.64$
$0.25 × 0.5 = 0.125$
$90 × 0.01 = 0.9$
$25 × 0.07 = 1.75$
$1.4 × 0.4 = 0.56$
$0.4 × 1.4 = 0.56$
$3.6 × 0.2 = 0.72$
$0.2 × 3.6 = 0.72$
$5.6 × 0.5 = 2.8$
$0.5 × 0.72 = 0.36$
$0.06 × 4 = 0.24$
$0.08 × 0.04 = 0.0032$
$1.25 × 0.06 = 0.075$
$6.4 × 0.8 = 5.12$
$0.9 × 7.25 = 6.525$

$2.4×4=$9.6
$5.1×0.2=$1.02
$7.98×10=$79.8
$4.6×5=$23
$4.8×0.1=$0.48
$1.8×0.5=$0.9
$7.5×0.2=$1.5
$1.1×0.9=$0.99
$0.25×40=$10
$3.6×0.3=$1.08
$1.3×0.4=$0.52
$7×0.08=$0.56
$2.7×0.02=$0.054
$0.18×4=$0.72
$9.5×0.2=$1.9
$2.1×0.04=$0.084
$2.7×0.3=$0.81
$8.9×0.1=$0.89
$0.32×0.8=$0.256
$4.05×6=$24.3
$8.08×50=$404

答案： 解析：这些题目都是基础的小数乘法口算题，主要考察小数乘法的计算方法和准确性。
答案：
$2.4×4=9.6$
$5.1×0.2=1.02$
$7.98×10=79.8$
$4.6×5=23$
$4.8×0.1=0.48$
$1.8×0.5=0.9$
$7.5×0.2=1.5$
$1.1×0.9=0.99$
$0.25×40=10$
$3.6×0.3=1.08$
$1.3×0.4=0.52$
$7×0.08=0.56$
$2.7×0.02=0.054$
$0.18×4=0.72$
$9.5×0.2=1.9$
$2.1×0.04=0.084$
$2.7×0.3=0.81$
$8.9×0.1=0.89$
$0.32×0.8=0.256$
$4.05×6=24.3$
$8.08×50=404$