来自刘鹏飞的问题
【(1)1+2-3+4+5-6+7+8-9+10…+28+29-30(2)7777×9+1111×37(3)5123×35+7134×47+9145×59(4)(3.6×0.75×1.2)÷(1.5×24×0.18)(5)36×2.54+1.8×49.2(6)11×2+21×2×3+31×2×3×4+…+81×2×3×…×9.】
(1)1+2-3+4+5-6+7+8-9+10…+28+29-30
(2)7777×9+1111×37
(3)5123×35+7134×47+9145×59
(4)(3.6×0.75×1.2)÷(1.5×24×0.18)
(5)36×2.54+1.8×49.2
(6)11×2+21×2×3+31×2×3×4+…+81×2×3×…×9.
1回答
2019-11-21 21:28