四年级下册数学同步练习-6单元4课时 乘法分配律-苏教版解析
http://t.cn/Ri466E4【精品】第6单元第4课时乘法分配律(练习及解析)苏教版-四年级数学下册一、判断。(对的打“√”,错的打“×)1.102X98=(100+2)X98=100X98+2X98这里运用了乘法的分配律。……()【解析】根据两个数的和与一个数相乘,可以先把它们与这个数分别相乘,再相加。这叫做乘法分配律。【答案】√2.36×25=(9×4)×25=9+4×25……………………………()【解析】36×25=(9×4)×25=9×4×25【答案】×3.125×17×8=125×8×17这里只运用了乘法结合律。……()【解析】125×17×8=125×8×17这里运用了乘法...
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