买5只同样的小蓝球要用135元,用400元能买到15只这样的小蓝球吗?为什么?(计算后回答)
计算.(能简便的用简便法计算)4.25÷0.125÷8 2.5×(6.2﹣2.6)×0.4 76.2÷0.16﹣0.160.45与2.4的积除1.62,商是多少?
1.25×32 0.56+3.48+0.44+6.52 2.8×(2.25+28.5÷1.5)5.8×7.6+7.6×4.2 145.3﹣58.6﹣41.4 [(5.1﹣3.6)÷0.8﹣1]×0.09.
我会巧算.1.2×0.4+1.3×0.4 (1.25+0.36)×0.2 7.2×0.3+28×0.03 0.25×0.56×0.48×(2.5+0.125) 0.25×0.56×0.4 32.8+5.6+7.2 75.2﹣66.9﹣5.2.
5×1.3÷5×1.399×10.158×10.1﹣5.8128.8÷23+9.2×0.35.
能简算的要简算0.76×230﹣30 9.2×l.85+3.65 (7.39+7.39+7.39+7.39)×2.50.78×101 0.25×28 4.2×l.36+1.36×5.8.