99999×77778+33333×66666巧算
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/13 19:56:01
99999×77778+33333×66666巧算
99999×77778+33333×66666
=99999×77778+33333×3×22222
=99999×77778+99999×22222
=99999×(77778+22222)
=99999×100000
=9999900000
再问: 17.5+17.5×1.74÷【0.1-0.04】巧算
再答: 17.5+17.5×1.74÷【0.1-0.04】
=17.5+17.5×1.74÷0.06
=17.5+17.5×29
=17.5x(1+29)
=17.5x30
=525
再问: {【12.5+1.25+0.125】×80-999}÷0.03巧算
再答: {【12.5+1.25+0.125】×80-999}÷0.03
={【12.5+12.5/10+12.5/100】×80-999}÷0.03
={12.5x(1+1/10+1/100)x80-999}÷0.03
={12.5x80x(1+1/10+1/100)-999}÷0.03
={1000x(1+1/10+1/100)-999}÷0.03
={1000+100+10-999}÷0.03
={1000-999+100+10}÷0.03
={1+100+10}÷0.03
=111÷0.03
=3700
=99999×77778+33333×3×22222
=99999×77778+99999×22222
=99999×(77778+22222)
=99999×100000
=9999900000
再问: 17.5+17.5×1.74÷【0.1-0.04】巧算
再答: 17.5+17.5×1.74÷【0.1-0.04】
=17.5+17.5×1.74÷0.06
=17.5+17.5×29
=17.5x(1+29)
=17.5x30
=525
再问: {【12.5+1.25+0.125】×80-999}÷0.03巧算
再答: {【12.5+1.25+0.125】×80-999}÷0.03
={【12.5+12.5/10+12.5/100】×80-999}÷0.03
={12.5x(1+1/10+1/100)x80-999}÷0.03
={12.5x80x(1+1/10+1/100)-999}÷0.03
={1000x(1+1/10+1/100)-999}÷0.03
={1000+100+10-999}÷0.03
={1000-999+100+10}÷0.03
={1+100+10}÷0.03
=111÷0.03
=3700
99999×77778+33333×66666巧算
33333*66666+99999*77778
33333*66666*77778*99999
99999*77778+33333*66666
计算33333*66666+77778*99999
99999*77778加上33333*66666
99999×77778+33333×66666=______.
99999*77778+33333+66666 (要简便算法)
简便计算题:99999×77778+33333×66666,
简算:99999*77778—33333*66666
99999*77778+33333*66666简便算法
99999×77778-33333×66666 简便运算