(1)460-70= (2) 4.35+3.65= (3) (4)
(5) (6)308+692= (7)880÷40= (8)
(9)18÷= (10)160×75%= (11)4.2÷30%= (12)××2=
(13)200×15%= (14) (15) (16)0.9×5.4―0.9×0.4=
(17) (18) += (19)÷= (20) 3÷5÷=
(21) (22)7.5×4 = (23)1000÷8 = (24)
(25)0.7+0.07= (26) (27)0.35÷0.7= (28)××=
(29) (30)12.56÷3.14= (31) (32)0.4×(12×2.5)=
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