试题与答案

123+2022323+30303232323+404040423232323+

题型:解答题

题目:

1
23
+
202
2323
+
30303
232323
+
4040404
23232323
+
505050505
2323232323

答案:

1
23
+
202
2323
+
30303
232323
+
4040404
23232323
+
505050505
2323232323

=

1
23
+
2×101
23×101
+
3×10101
23×10101
+
4×1010101
23×1010101
+
5×101010101
23×101010101

=

1
23
+
2
23
+
3
23
+
4
23
+
5
23

=

1+2+3+4+5
23

=

15
23

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