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（1）24+11= 1.25×8=
= 
= 32-25= 1.7×0.3= 1-
= 8÷ 
=14×4= 3.5÷0.7=
= 
=45÷5= 12÷0.1=
= 
=（2）140×3=
= 
= 0.25=（ ）% 1.2+0.4= 
= 
×16= 0.234=（ ）% 8.1-5.7=
= 0 
= 
=（ ）% 0.8×3=
= 
1= 
=（ ）% 9.09÷9=
-1= 12× = 80%= 
2-1.36=
= 1÷7= 35%= 
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
