https://padlet.com/YuKaiChun/5xdv7lpl17xcfkcc 在白紙或簿上自擬題目，然後計算及驗算 en-us 2022-05-05 23:31:08 UTC 2022-05-28 05:34:16 UTC hello@padlet.com YuKaiChun https://padlet.com/YuKaiChun/5xdv7lpl17xcfkcc/wish/2172177908 手機原價4000元，現八折發售，會員再有額外九折優惠。問會員買手機，要現付多少元？]]> 2022-05-05 23:38:17 UTC https://padlet.com/YuKaiChun/5xdv7lpl17xcfkcc/wish/2172177908 YuKaiChun https://padlet.com/YuKaiChun/5xdv7lpl17xcfkcc/wish/2177188160 2022-05-10 08:08:17 UTC https://padlet.com/YuKaiChun/5xdv7lpl17xcfkcc/wish/2177188160