《2025年小学生每日10分钟竖式计算卡三年级数学下册苏教版》

求长方形的面积(S)
①$a = 9\text{cm}$ $b = 3\text{cm}$
②$a = 8\text{m}$ $b = 4\text{m}$
③$a = 12\text{dm}$ $b = 8\text{dm}$
④$a = 10\text{cm}$ $b = 3\text{cm}$
⑤$a = 50\text{cm}$ $b = 30\text{cm}$
⑥$a = 21\text{dm}$ $b = 4\text{dm}$
⑦$a = 14\text{cm}$ $b = 7\text{cm}$
⑧$a = 11\text{m}$ $b = 7\text{m}$
⑨$a = 7\text{cm}$ $b = 2\text{cm}$
⑩$a = 18\text{dm}$ $b = 11\text{dm}$

答案：  $27cm^{2}$ $32m^{2}$ $96dm^{2}$ $30cm^{2}$ $1500cm^{2}$ $84dm^{2}$ $98cm^{2}$ $77m^{2}$ $14cm^{2}$ $198dm^{2}$