简便计算
98×56
=(100-2)x56
=100x56-2x56
=5600-112
=5488
Ⅱ 98×56的简便运算
这个一般用乘法分配律来做,一般情况下把一个数看作整十整百数来做,
在这里可以把98看做100-2
98×56
=(100-2)×56
=100×56-2×56
=5600-112
=5488
Ⅲ 简便计算:199x99十99和98x55
199×99+99
=99×(199+1)
=99×200
=19800,
98×55
=100×55-2×55
=5500-110
=5390
Ⅳ 55×98简便方法计算
55×98简便方法计算
55×98
=55*(100-2)
=55*100-55*2
=5500-110
=5390
Ⅳ 54✖️98➕98怎么简便
这道题可以用两次乘法分配律来简便计算,
54×98+98
=(54+1)×98
=55×98
=55×(100-2)
=55×100-55×2
=5500-110
=5390
Ⅵ 98×55简便计算怎么算
98×55简便计算怎么算
98×55
=55*(100-2)
=55*100-55*2
=5500-110
=5390