如题所述
302x36
=(300+2)x36
=300x36+2x36
=10800+72
=10872
98x25
=(100—2)x25
=100x25-2x25
=2500-50
=2450
=(300+2)x36
=300x36+2x36
=10800+72
=10872
98x25
=(100—2)x25
=100x25-2x25
=2500-50
=2450
温馨提示:答案为网友推荐,仅供参考
第1个回答 2011-06-13
98X25=(100-2)X25=100X25-2X25=2500-50=2450
302X36=(300+2)X36=300X36+2X36=10800+72=10872
302X36=(300+2)X36=300X36+2X36=10800+72=10872
第2个回答 2011-06-13
302*36=300*36+2*36=10872
98*25=100*25-2*25=2450
98*25=100*25-2*25=2450