簡便計算
98×56
=(100-2)x56
=100x56-2x56
=5600-112
=5488
Ⅱ 98×56的簡便運算
這個一般用乘法分配律來做,一般情況下把一個數看作整十整百數來做,
在這里可以把98看做100-2
98×56
=(100-2)×56
=100×56-2×56
=5600-112
=5488
Ⅲ 簡便計算: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簡便方法計算
55×98簡便方法計算
55×98
=55*(100-2)
=55*100-55*2
=5500-110
=5390
Ⅳ 54✖️98➕98怎麼簡便
這道題可以用兩次乘法分配律來簡便計算,
54×98+98
=(54+1)×98
=55×98
=55×(100-2)
=55×100-55×2
=5500-110
=5390
Ⅵ 98×55簡便計算怎麼算
98×55簡便計算怎麼算
98×55
=55*(100-2)
=55*100-55*2
=5500-110
=5390