(1)买一把剪刀和一个台灯,一共要多少元?
算式:_____________________________(元)
答:一共要( )元。
(2)王老师带了100元钱,买了一张电脑桌,还剩余多少元?
算式:_____________________________(元)
答:还剩余( )元。
(3)笑笑有20元钱,买两个球,笑笑带的钱够吗?
算式:_____________________________
答:笑笑带的钱( )。
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