直接写出得数 9﹣6.27= 3.6+1.94= 12.5×0.25×0.8×40= 10.2×6.7= 1.17÷9=30.6﹣6.49﹣3.51= 2.52÷1.8= 5.5×9.8= 6.28÷0.8÷5= 0.8×18.5=40.8÷0.34= 14.7×0.54+0.46×14.7= 3.25+0.07= 9.47﹣4.7= 4.8×1.4÷7=
19.62﹣6.4﹣3.66×0.11+57.6×0.89×57+×42+.
正确合理计算. 36÷0.4﹣1.2×5 0.65×6.4﹣0.65×5.4 0.25×13.7×0.4.
能简算的要用简便方法计算. 2.5×2.9×0.44.6×5.9+5.4×5.90.25+0.75÷0.2513.5×2﹣3.5×2.
直接写出结果. 32×0.25×0.5=7.63×9.9+0.763== 45÷7﹣3÷7=666×333﹣66×33﹣6×3==
计算: ①5.75﹣8.63+(9.25﹣2.37) ②15.7﹣8﹣2 ③(44×4)×25 ④999×363+7364 ⑤9.8+99.8+999.8+9999.8+99999.8 ⑥1﹣+++ ⑦(1+++)×(+++)﹣(1++++)×(++) ⑧×48.