For primary school children in grade one, the addition and subtraction method within 20 can be printed.

Filename	Size	Update
RanCal\Project1.bpr	3768	2020-12-30
RanCal\Project1.cpp	970	2020-12-30
RanCal\Project1.dsk	6005	2020-12-31
RanCal\Project1.obj	18657	2020-12-30
RanCal\Project1.res	876	2020-12-30
RanCal\Project1.tds	2031616	2020-12-30
RanCal\Unit1.cpp	3067	2020-12-30
RanCal\Unit1.ddp	51	2020-12-30
RanCal\Unit1.dfm	1099	2020-12-30
RanCal\Unit1.h	941	2020-12-30
RanCal\Unit1.obj	44378	2020-12-30
RanCal\算术出题机.exe	28672	2020-12-30
RanCal	0	2020-12-31

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