18.3*0.25+5.3/0.4-3.13*2.5 简便运算 简便运算 我急用,我会赏分的18.3*0.25+5.3/0.4-3.13*2.5求求你们
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18.3*0.25+5.3/0.4-3.13*2.5 简便运算 简便运算 我急用,我会赏分的18.3*0.25+5.3/0.4-3.13*2.5求求你们
18.3*0.25+5.3/0.4-3.13*2.5 简便运算
简便运算
我急用,我会赏分的
18.3*0.25+5.3/0.4-3.13*2.5
求求你们
18.3*0.25+5.3/0.4-3.13*2.5 简便运算 简便运算 我急用,我会赏分的18.3*0.25+5.3/0.4-3.13*2.5求求你们
0.4*2.5=1,因此一个数除以0.4,等于这个数乘2.5
18.3*0.25+5.3/0.4-3.13*2.5
=(1.83+5.3-3.13)*2.5
=4*2.5
=10
18.3*0.25+5.3/0.4-3.13*2.5
=1.83*2.5 + 5.3*2.5 - 3.13 * 2.5
=(1.83+5.3-3.13)*2.5
=4*2.5
=10
第一步
分别算出18.3*0.25,5.3/0.4,3.13*2.5
代入,得
4.575+13.25-7.825
得
10
写出来就是
18.3*0.25+5.3/0.4-3.13*2.5
= 4.575+13.25-7.825
= 10
18.3*0.25+5.3/0.4-3.13*2.5
=18.3*0.25+53/4-31.3*0.25
=18.3*0.25+53*0.25-31.3*0.25
=(18.3+53-31.3)*0.25
=40÷4
=10
原式=18.3×0.25+53×0.25-31.3×0.25
=(18.3+53-31.3)×0.25
=40×1/4
=10
18.3*0.25+5.3/0.4-3.13*2.5
=1.83 * 2.5 + 5.3*2.5 - 3.13 *2.5
=(1.83+5.3-3.13)*2.5
= 4*2.5
= 10
原式=18.3*0.25+5.3*2.5-3.13*2.5
=18.3*0.25+(5.3-3.13)*2.5
=18.3*0,25+(2.17)*0.25*10
=18.3*0.25+21.7*0.25
=(18.3+21.7)*0.25
=40*0.25
=10