四年级数学上册【运算律】简便运算计算题

四年级数学上册【运算律】简便运算计算题

  • 简介

    类型一:(注意:一定要括号外的数分别乘括号里的两个数,再把积相加) (40+8)×25 125×(8+80) 36×(100+50) 86×(1000-2) =40×25+8×25 =125×8+125×80 =36×100+36×50 =86×1000-86×2 =1000+200 =1000+10000 =3600+1800 =86000-172 =1200 =11000 =5400 =85828 类型二:(注意:两个积中相同的因数只能写一次) 36×34+36×66 75×23+25×23 63×43+57×63 325×113-325×13 =36×(34+66) =23×(75+25) =63×(43+57) =325×(113-13) =36×100 =23×100 =63×100 =325×100 =3600 =2300 =6300 =32500

四年级数学上册【运算律】简便运算计算题