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1、 20以内进位加法口诀表9 + 2 = 118 + 3 = 117 + 4 = 116 + 5 = 115 + 6 = 114 + 7 = 113 + 8 = 112 + 9 = 119 + 3 = 128 + 4 = 127 + 5 = 126 + 6 = 125 + 7 = 124 + 8 = 123 + 9 = 129 + 4 = 138 + 5 = 137 + 6 = 136 + 7 = 135 + 8 = 134 + 9 = 139 + 5 = 148 + 6 = 147 + 7 = 146 + 8 = 145 + 9 = 149 + 6 = 158 + 7 = 157 + 8 =
2、156 + 9 = 159 + 7 = 168 + 8 = 167 + 9 = 169 + 8 = 178 + 9 = 179 + 9 = 18 20以内退位减法口诀表11 - 9 = 2 11 - 8 = 3 11 - 7 = 4 11 - 6 = 5 11 - 5 = 6 11 - 4 = 7 11 - 3 = 8 11 - 2 = 9 12 - 9 = 3 12 - 8 = 4 12 - 7 = 5 12 - 6 = 6 12 - 5 = 7 12 - 4 = 8 12 - 3 = 9 13 - 9 = 4 13 - 8 = 5 13 - 7 = 6 13 - 6 = 7 13 - 5
3、= 8 13 - 4 = 9 14 - 9 = 5 14 - 8 = 6 14 - 7 = 7 14 - 6 = 8 14 - 5 = 9 15 - 9 = 6 15 - 8 = 7 15 - 7 = 8 15 - 6 = 9 16 - 9 = 7 16 - 8 = 8 16 - 7 = 9 17 - 9 = 817 - 8 = 9 18 - 9 = 9 20以内进位加法退位减法口诀表2+93+94+95+96+97+98+99+93+84+85+86+87+88+89+84+75+76+77+78+79+71195+66+67+68+69+61291186+57+58+59+51391281177+48+49+41491381271168+39+31591481371261159+2169158147136125114179168157146135124113189178167156145134123112