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人教新课标一年级数学下册20以内的退位减法整理与复习11-911-811-711-611-511-411-311-212-912-812-712-612-512-412-3111111111111111198765432=2=3=4=5=6=7=8=911-911-811-711-611-511-411-311-212-912-812-712-612-512-412-311111111111111119876543213-913-813-713-613-513-414-914-814-714-614-515-915-815-715-616-916-816-717-917-818-91212121212121213131313131314141414141515151516161617171820以内退位减法表9876543...
