1. (2023四下·昌平期末) 口算

3.5+3.2=	1.25+50=	15.7-4.7=	0.7+1.4=	3.9×10=
1.5-0.6=	6.8-5.7=	0.5+1.25=	10-0.7=	5.4÷100=