第55页

信息发布者：
$9.99$
$0.046$
$1.5$
$0.8$
$0.17$
$2.86$
$1.2$
$0.39$
=(7.48+0.52)-(1.32+2.68)
= $4$
=3.05÷(2.5×4)
= $0.305$
=38.4×(10.1-0.1)
=$384$
=36.6÷(0.4×1.5)
= $61$
=15.05
=13.93
=2.623
≈0.21

3.2×2.8+(4−2.8)×(3.2−1)÷2 =10.28(cm²)
(42−7)×18÷2=315(cm²)
上一页 下一页