列竖式计算.①546÷78= ②65×85= ③210÷53=
用简便方法计算125×32 640÷5÷8 653﹣98 944+102.
用简便方法计算4.8×0.25 2.33×0.5×4 1.2×2.5+0.8×2.5 3.7÷1.25÷8.
用简便方法计算4.76×9.8+4.76×0.2 3.74+6.09+6.26+3.913.75×2.5×0.4 6.64×1.2﹣2.64×1.2.
25×201﹣25.
用简便方法计算.421﹣(187+121) 99×99 5400÷45125×48 125×(5×8)×60 58×56﹣56+56×43.