3.2x2.5的简便计算

蔚歪容4245小学生32*2.5的简便计算方法 -
陆都狄13179663769 ______ 32*2.5 =8*(4*2.5) =8*10 =80

蔚歪容42453.2x2.5 7.28的简便方法 -
陆都狄13179663769 ______ 3.2x2.5 +7.28=2.5*4*0.8+7.28=8+7.28=15.28

蔚歪容42453.2x(1.25+2.5)递等式计算 简便计算 -
陆都狄13179663769 ______[答案] 3.2x(1.25+2.5) =3.2x3.75 =12 或 3.2x(1.25+2.5) =3.2x1.25+3.2x2.5 =4+8 =12

蔚歪容4245(3.2x2.5+1.5)除以1.6的简算方法 -
陆都狄13179663769 ______[答案] 分开来除 原式=3.2*2.5÷1.6+1.5÷1.6 =2*2.5+15/16 =5又15/16 有什么不明白可以继续问,随时在线等. 有其他问题请采纳本题后另发点击向我求助. 如果我的回答对你有帮助,请及时选为满意答案,谢谢~~

蔚歪容42450.32x2.5怎样简便计算 -
陆都狄13179663769 ______ 0.32*2.5 =(0.32÷4)*(2.5*4) =0.08*10 =0.8

蔚歪容42453.2÷2.5的简便运算 -
陆都狄13179663769 ______[答案] 3.2÷2.5 =(3.2*4)÷(2.5*4) =12.8÷10 =1.28

蔚歪容42452.5x(3.2x0.125)用简便方法计算 -
陆都狄13179663769 ______ 2.5x(3.2x0.125) =2.5*(0.4*8*0.125) =(2.5*0.4)*(8*0.125) =1*1 =1

蔚歪容42453.2x(1.8十2.2x2.5)简便方法 -
陆都狄13179663769 ______ =3.2*1.8+3.2*2.2*2.5 =3.2*(2-0.2)+1.6*1.1*4*2.5 =6.4-0.64+1.6*11 =6.4-0.4-0.24+1.6*10+1.6 =5.76+16+1.6 =5.76+17.6 =3.36+2.4+17.6 =23.36

蔚歪容42453.2x2.5+2.5x0.8怎么算,能简算要简算 -
陆都狄13179663769 ______ 可以简化为2.5*(3.2+0.8)即2.5*4=10

蔚歪容42453.2*12.5+0.5的简便运算 -
陆都狄13179663769 ______ 3.2*12.5+0.5 =4x0.8x12.5+0.5 =4x10+0.5 =40+0.5 =40.5