用简便算法计算（15.2-9.9)-(4.3-2.54）

来源：学生作业帮助网编辑：作业帮时间：2024/05/06 14:05:50

用简便算法计算（15.2-9.9)-(4.3-2.54）
用简便算法计算（15.2-9.9)-(4.3-2.54）

用简便算法计算（15.2-9.9)-(4.3-2.54）
(15.2-9.9)-(4.3-2.54)
=(15.2-(10-0.1))-((4+0.3)-2.54)
=(15.2-10+0.1)-4-0.3+2.54
=5.3-0.3-4+2.54
=3.54

没怎么看懂，你的意思是怎么口算么（15.2-10+0.1）-（4.54-2.54-0.24）=3.54

全部展开

GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFGGGGGGGGGGGGGGGGGGGGGGGGGG

收起

用简便算法计算用简便算法计算用简便算法计算. 用简便算法计算用简便算法计算（15.2-9.9)-(4.3-2.54） 68×9.9用简便算法计算请用简便算法计算, 要用简便算法计算, 要求用简便算法计算 0.9+9.9+99.9+0.3 用简便算法计算（脱式）! 16.12×9.9+1.612用简便算法怎麽计算? 用简便算法计算:5.7*99+4.4*99-9.9 3.7*0.25+6.3/4,用简便算法计算计算(用简便算法)1+(-2)+(+3)+(-4)+...+(+99)+(-100) 56乘以1.25 用简便算法计算, 21除以1.25用简便算法计算【28+99*28】用简便算法计算用简便算法计算99000/121*11