桂琴
桂琴,异分母分数加减法课件ppt()
8 = 1 18 试一试 计算 8765 + 3297 - = = 2441+ 2420242191= = 9796_ 51+ 8312587 - 4023= = 4015408+ 2411= = 24212410_ 法则 异分母分数相加、减,先通分, 然后按照同分母分数加、减法的法则
8 = 1 18 试一试 计算 8765 + 3297 - = = 2441+ 2420242191= = 9796_ 51+ 8312587 - 4023= = 4015408+ 2411= = 24212410_ 法则 异分母分数相加、减,先通分, 然后按照同分母分数加、减法的法则