3.2÷2= 0.2×0.5= 0.36÷0.2= 0.7×4=7.2÷0.8= 0.25×4= 1.25×0.8= 3.2÷8=0.5×4.7×0.2= 1.72×0.9+1.28×0.9=
4×(25×25+25×175)
101×93﹣93.
(213﹣176)×(156÷3)
(1)25×46×4(2)6363÷63+99(3)275+101+125+299(4)253+306÷18×24.
99×85+85.