口算。3.2+1.5=4.8+2.2=4.5+2.2=3.9-2.7=4.8-3 发布时间:2017-06-11 22:12 │ 来源:www.tikuol.com 题型:口算题 问题: 口算。3.2+1.5=4.8+2.2=4.5+2.2=3.9-2.7=4.8-3.6=4.8+6.1=0.6+0.4=1.6-0.3=0.3+0.5=4.9-0.8=5.4-3.2=7.5-2.2=