"Cracking Code Purple" and "Who is Katherine Johnson"

What is the main idea of the informational text, "Cracking Code Purple?"

• The Japanese developed an unbreakable code during World War II.

• Genevieve Grotjan's discovery helped the U.S. decode Japanese messages and contributed to the war effort.

• The Signal Intelligence Service was unsuccessful in breaking World War II codes.

• Cryptanalysis required advanced computers to decode messages.

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How does the description of the decoding process contribute to the text?

• It explains why crytanalysis required military training.

• It suggests that the decoding process was simple with the right tools.

• It highlights the role of mathematicians in the U.S. Army.

• It shows the complexity and difficulty of breaking the Purple code.

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In the sentence, "Magic contributed enormously to the defeat of the enemy," what does the word enormously most likely mean? 

• in a small amount

• in a magical way

• to a great extent

• in a surprising way

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Which statement best summarizes the main idea of the informational text, "Who is Katherine Johnson?"

• Katherine Johnson's mathematical skills helped NASA achieve major milestones in space exploration, despite the challenges she faced.

• Katherine Johnson worked at NASA for many years, mainly calculating flight paths for rockets.

• Katherine Johnson's main contribution was teaching math to students after her retirement.

• Katherine Johnson struggled to find a job due to the limited opportunities for women in science and mathematics.

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How does the section "What Was Katherine Johnson's Early Life Like?" contribute to the overall understanding of Johnson's career?

• It highlights her determination and early passion for mathematics, which laid the foundation for her later success.

• It explains the challenges she faced at NASA as a female mathematician.

• It describes her experiences working with Dr. Claytor in college.

• It emphasizes the importance of education in the early 20th century.

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In the sentence, "Johnson's calculations were instrumental in NASA's success," what does the word "instrumental" most likely mean?

• Not important

• Harmful

• Simple

• Extremely helpful

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