7.2乘以6.1+3.8除以0.197.2×6.1＋3.8÷0.19

7.2乘以6.1+3.8除以0.197.2×6.1＋3.8÷0.19 3.5乘以1.25+1.25+3.8除以0.8 简算 7.2除以0.25+2.8乘以4. 78.4除以【 】除以35=0.4 6乘以【 】除以11=7.2 25.2除以7.2乘以0.8的简算 7.2乘以多少的积除以0.8乘以多少的积等于9 23.1乘以2.3除以23.1乘以0. 8989乘以555除以101除以111 3.998除以1.4乘以5.6除以19.99 552除以25除以24乘以125 552除以25除以24乘以125 7142.85除以3.7除以2.7乘以1.7乘以0.7 3.7乘以0.46.0.074乘以5.9.2.4除以0.26.0.742除以3.8.15.5除以0.5.97.13减7.03.保留两位小数. 括号7.2乘以69乘以0.5反括号除以括号1.8乘以20乘以2.3反括号用简便方法计算. 42.8除以0.39乘以0. 3.06除以(8乘以30.6) 81.5乘以50除以20000 sina乘以180除以3.