问题 填空题
照样子写式子。
39
30+9=39
20+19=39
89-50=39
38+1=39
67
              =67
              =67
              =67
              =67
43
              = 43
              = 43
              = 43
              = 43
52
              =52
              =52
              =52
              =52
答案

30+37;60+7;97-30;66+1;

40+3;20+23;63-20;42+1;

50+2;32+20;82-30;51+1;

(答案不唯一)

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