计算
$80-79.6=$
$4.5×0.2=$
$4×0.3-0.8=$
$2.3+5.6=$
$0.9×5=$
$2.5×0.8×4=$
$6.8-3.9=$
$0.6×0.15=$
$3.6×0.01×10=$
$7.3-6.4=$
$5.5×0.3=$
$2.5×4×0.2=$
$5.2-0.5=$
$7.2×0.1=$
$3.5×2-7=$
$3.06+2.9=$
$1.5×0.8=$
$3-0.4×5=$
$30-6.4=$
$0.7×0.08=$
$1.2×0.5×100=$
$8.91-7.1=$
$0.25×0.4=$
$18×0.1+0.2=$
$4-1.7=$
$0.8×0.7=$
$5×0.6-3=$
$1-0.12=$
$2.4×2=$
$3.2+0.8×0.5=$
$5+3.6=$
$1.25×8=$
$4-0.8+1.2=$
$5-3.6=$
$4×1.5=$
$0.25×3×2=$
$20-2.4=$
$0.5×0.2=$
$4×3-0.2=$

$80-79.6=0.4$
$4.5×0.2=0.9$
$4×0.3-0.8=0.4$
$2.3+5.6=7.9$
$0.9×5=4.5$
$2.5×0.8×4=8$
$6.8-3.9=2.9$
$0.6×0.15=0.09$
$3.6×0.01×10=0.36$
$7.3-6.4=0.9$
$5.5×0.3=1.65$
$2.5×4×0.2=2$
$5.2-0.5=4.7$
$7.2×0.1=0.72$
$3.5×2-7=0$
$3.06+2.9=5.96$
$1.5×0.8=1.2$
$3-0.4×5=1$
$30-6.4=23.6$
$0.7×0.08=0.056$
$1.2×0.5×100=60$
$8.91-7.1=1.81$
$0.25×0.4=0.1$
$18×0.1+0.2=2$
$4-1.7=2.3$
$0.8×0.7=0.56$
$5×0.6-3=0$
$1-0.12=0.88$
$2.4×2=4.8$
$3.2+0.8×0.5=3.6$
$5+3.6=8.6$
$1.25×8=10$
$4-0.8+1.2=4.4$
$5-3.6=1.4$
$4×1.5=6$
$0.25×3×2=1.5$
$20-2.4=17.6$
$0.5×0.2=0.1$
$4×3-0.2=11.8$

把题号填在相应的横线上
①$20×0.7×5$
②$125×0.1×8$
③$250×0.1×4$
④$25×7×0.4$
⑤$1.4×100×0.5$
⑥$50×50.25-50×30.25$
⑦$250×0.2+250×0.2$
⑧$4×21.9+4×3.1$
⑨$12.5×0.1×80$
⑩$3.5×25.4-5.4×3.5$
得数为100的是：

得数为70的是：

得数为100的是：②③⑥⑦⑧⑨
得数为70的是：①④⑤⑩