用直线上的点表示下面各数.,,1.
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.
计算下面各题.3.52+8.4+2.6 5.94+6.7+1.06+0.342.24﹣6.24﹣3.76 4.92+3.27﹣4.92+3.73.
8.4×2.5+7.185.81﹣0.25×1.60.8×630×0.125.