题目内容
| 用竖式计算 23.9-9.9= | 33×12= | 63×27= | 81×29= |
| 3.5+4.0= | 12.6+3.2= | 52×49= | 5.4-3.6= |
①23.9-9.9=14;

②33×12=396;

③63×27=1701;

④81×29=2349;

⑤3.5+4.0═7.5;

⑥12.6+3.2=15.8;

⑦52×49=2548;

⑧5.4-3.6=1.8;

②33×12=396;
③63×27=1701;
④81×29=2349;
⑤3.5+4.0═7.5;
⑥12.6+3.2=15.8;
⑦52×49=2548;
⑧5.4-3.6=1.8;
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