1.车上原有68人,到站后下车了20人,__________,车上现在有多少人?
2.买每瓶2元的牛奶3瓶,____________,牛奶和饼干一共花了多少钱?
3.一支竹竿插入水里的部分有13米,___________,这支竹竿长多少米?
4.王小丽买了4个笔记本后,还剩12元,___________,她原来有多少元?
5.一个三角形三条边都一样长,___________,三角形三条边一共长多少米?
6.一座楼房,__________,这座楼房从一楼到四楼顶高多少米?
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2