计算下面各题,能简算的要简算. 67÷2.5÷0.4 | 27.5-13.58-6.42 | 9.88÷[5×(7.34-4.96)] |
15.4×5.8+5.8×4.6 | 4.2+14.8×(4-3.99) | 15+(1.2+3.64×0.5) |
解方程
(1)7x=![]() | (2)x÷![]() ![]() |
用自己喜欢的方法算
(315+285)÷(315-255) | 5-(![]() ![]() ![]() |
(![]() ![]() ![]() | 3.3×![]() |
计算下面各题,能简算的要简算. 67÷2.5÷0.4 | 27.5-13.58-6.42 | 9.88÷[5×(7.34-4.96)] |
15.4×5.8+5.8×4.6 | 4.2+14.8×(4-3.99) | 15+(1.2+3.64×0.5) |
(1)7x=![]() | (2)x÷![]() ![]() |
(315+285)÷(315-255) | 5-(![]() ![]() ![]() |
(![]() ![]() ![]() | 3.3×![]() |