计算
$0.5×0.4×0.2=$
$0.8×(0.1+0.4)=$
$0.4×0.6×0.5=$
$0.5×0.8+1.6=$
$1.5-7.5×0.2=$
$2.1×3-6.2=$
$10×0.99+0.1=$
$0.05×20-1=$
$4.5×0.2×0.4=$
$2.5×4×0.1=$
$1.2×6+3.8=$
$(0.11-0.11)×9.7=$
$1.5×0.2×0.3=$
$1.8×5+9=$
$3.2×0.1×0.3=$
$2.5×(0.32+0.68)=$
$3.7×(3.7-3.7)=$
$7.5×2×0.5=$
$1.7×0.1×0.3=$
$0.8×0.5×0.2=$

$0.5×0.4×0.2=0.04$
$0.8×(0.1+0.4)=0.4$
$0.4×0.6×0.5=0.12$
$0.5×0.8+1.6=2$
$1.5-7.5×0.2=0$
$2.1×3-6.2=0.1$
$10×0.99+0.1=10$
$0.05×20-1=0$
$4.5×0.2×0.4=0.36$
$2.5×4×0.1=1$
$1.2×6+3.8=11$
$(0.11-0.11)×9.7=0$
$1.5×0.2×0.3=0.09$
$1.8×5+9=18$
$3.2×0.1×0.3=0.096$
$2.5×(0.32+0.68)=2.5$
$3.7×(3.7-3.7)=0$
$7.5×2×0.5=7.5$
$1.7×0.1×0.3=0.051$
$0.8×0.5×0.2=0.08$

填空
乘数 25 2.5 2.5 2.5
乘数 4 图1 4 8
积 100 200 5
加数 3.5 12.75 4.23
加数 0.16 图2 0.75
和 10 2 1 20 10

25
8
2
10
20
6.5
1.84
0.25
7.25
5.77