(1)一本比一辆便宜多少元?
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(2)小明付了40元,找回10元,他买了什么?先算一算,再在图上圈出来。
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(3)小新买了一辆玩具小汽车,找回4元,他付了多少钱?
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(4)小明带了50元钱,要买一辆玩具小汽车和一本字典,请你帮他算一算钱够不够,并在正确答案后面画√。
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够( ) 不够( )
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