Henry

1/42+1/30+1/20+1/12+1/6+1/2=？

hint：1/42=1/6×7，1/30=1/5×6 (a)  

Convert fraction to a decimal

¹/₂₀₀

(a)  

$$\left(\frac{2}{3}-\frac{1}{4}\right)+\left(\frac{1}{2}\times\frac{1}{3}\right)$$  

(a)  

Write the mixed number as an improper fraction

5 ⁶/₇

(a)  

Convert fraction to a decimal

¹⁵/₂₀

(a)  

Which of the following is larger than 0.34?

Kennedy Space Center, located on Merritt Island, is also a National Wildlife Refuge. Only about 0.04 of the total area is used for space operations. Which fraction best represents the area used for space operations? （翻译：位于梅里特岛的肯尼迪航天中心也是国家野生动物保护区。只有大约0.04的总面积用于空间操作。哪个部分最能代表用于空间操作的面积）

do ²/₅ and ¹⁰/₂₅ convert to the same decimal?

What is the percent of the shaded portion of the figure??