拓展题简便计算 47 *34+22*51拓展题简便计算47 *34+22*51
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 20:54:52
![拓展题简便计算 47 *34+22*51拓展题简便计算47 *34+22*51](/uploads/image/z/89062-70-2.jpg?t=%E6%8B%93%E5%B1%95%E9%A2%98%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+47+%2A34%2B22%2A51%E6%8B%93%E5%B1%95%E9%A2%98%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%9747+%2A34%2B22%2A51)
拓展题简便计算 47 *34+22*51拓展题简便计算47 *34+22*51
拓展题简便计算 47 *34+22*51
拓展题简便计算
47 *34+22*51
拓展题简便计算 47 *34+22*51拓展题简便计算47 *34+22*51
47 *34+22*51=47*34+11*2*17*3
=47*34+(11*3)*(2*17)
=47*34+33*34
=34*(47+33)
=34*80
=(30+4)*80
=30*80+4*80
=2400+320
=2720
47 *34+22*51
=47*17*2+22*17*3
=94*17+66*17
=17*(94+66)
=17*160
=2720