9999+999+99+9的简便方法

项腾龚45649999+999+99+9=?????????????? -
袁阅通18752934250 ______ 9999+999+99+9=10000-1+1000-1+100-1+10-1=(10000+1000+100+10)-(1+1+1+1)=11110-4=11106 希望对你有帮助

项腾龚45649999+999+99+9 用简便方法计算 -
袁阅通18752934250 ______[答案] 9999+999+99+9 =(10000-1)+(1000-1)+(100-1)+(10-1) =11110-4 =11106

项腾龚4564简算9999+999+99+9+4 -
袁阅通18752934250 ______[答案] 9999+999+99+9+4 =(9999+1)+(999+1)+(99+1)+(9+1) =10000+1000+100+10 =11110

项腾龚4564用简便方法计算.9999+999+99+9 -
袁阅通18752934250 ______[答案] 10000+1000+100+10-4

项腾龚45649999+9999+9999+9999+9999+9999+9999+999+999+999+99+99+9+9+99+9+1+1+1+1+253+6965+85664 -
袁阅通18752934250 ______[答案] 9999999999999

项腾龚4564用简便方法计算999999+99999+9999+999+99+9怎样算才能简便呢(⊙o⊙)? -
袁阅通18752934250 ______[答案] 999999+99999+9999+999+99+9 = 1000000-1 + 100000 -1 + 10000 - 1 + 1000 -1 + 100-1 + 10-1 = 1111110 - 6 = 1111104

项腾龚45649999+999+99+9+5简算 要有过程 -
袁阅通18752934250 ______[答案] 9999+999+99+9+5 =(9999+1)+(999+1)+(99+1)+(9+1)+1 =10000+1000+100+10+1 =11111

项腾龚45649999+999+99+9+6 怎么算准确结果! -
袁阅通18752934250 ______[答案] 9999+999+99+9+6 =9999+1+999+1+99+1+9+1+2 =10000+1000+100+10+2 =11112

项腾龚45649999+999+99+9+4怎么简便运算 -
袁阅通18752934250 ______ 解:9999+999+99+9+4=9999+999+99+9+1+1+1+1=(9999+1)+(999+1)+(99+1)+(9+1)=10000+1000+100+10=11110

项腾龚4564计算:99999+9999+999+99+9=______. -
袁阅通18752934250 ______[答案] 99999+9999+999+99+9, =(100000-1)+(10000-1)+(1000-1)+(100-1)+(10-1), =(100000+10000+1000+100+10)-(1+1+1+1+1), =111110-5, =111105; 故答案为:111105.