①104+117=221 ②104÷8=13 ③117÷3=39
④54÷6=9 ⑤221÷9=24……5 ⑥104+117÷9 ⑦(104+117)÷9
⑧答:最多可以买25本。
⑨答:最多可以买24本。
1.分步列式正确的是( )
A.①④⑤ | B.②③④ | C.④⑤ |
A.④⑥ | B.④⑦ |
A.⑧ | B.⑨ |
A.①⑤⑧ | B.④⑦⑨ | C.②③④⑨ |
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