Outside the space station, Nova, Luna, and Emek stepped onto a line of numbered platforms extending in opposite directions from platform 0. A damaged satellite was drifting near platform -14 and needed a quick repair. Nova was waiting at platform -6, Luna at platform 5, and Emek at platform 9. They first compared their positions and saw that Nova was closest to the satellite. She was 8 platform spaces away, while Luna was 19 spaces away and Emek was 23 spaces away. Luna pointed out that the negative sign showed which side of zero a platform was on, not how far it was from zero. The team also checked their distances from the station at 0: Nova was 6 spaces away, Luna 5, and Emek 9. They chose Nova for the repair route, and she reached the satellite safely before it drifted farther away.

Challenges

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Challenge 1 of 5

Challenges

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Challenge 1 of 4
Hint
On a number line, numbers farther to the left are smaller.
Before Nova begins the repair, which statement correctly compares the three astronauts' platform positions?
9 < 5 < -6-6 < 5 < 95 < -6 < 9-6 < 9 < 5
Correct. Nova's position -6 is less than Luna's 5, which is less than Emek's 9.
Not quite. Think about the order of -6, 5, and 9 from left to right on the number line.
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Hint
Find the distance from -14 to 0, then add the distance from 0 to 5.
After repairing the satellite at platform -14, Nova travels back to the station at platform 0 and then continues to Luna at platform 5. How many platform spaces does Nova travel altogether from the satellite to Luna?
Correct. Nova travels 14 spaces to the station and 5 more spaces to Luna.
Check both parts of Nova's route: from -14 to 0 and then from 0 to 5.
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Hint
Compare the distances from -3 to Nova at -6, Luna at 5, and Emek at 9.
A second damaged satellite is reported at platform -3. Which astronaut is closest to this new satellite, based on their original positions in the story?
Nova, because she is 3 spaces awayLuna, because she is 2 spaces awayEmek, because he is 6 spaces awayNova and Luna, because they are equally far away
Correct. The distance between -6 and -3 is only 3 platform spaces.
Recalculate each distance from platform -3. Distance is the number of spaces between two positions.
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Uydu Onarım Rotası
TR
ARC_G06_NUM_02_STORY_01
Uydu Onarım Rotası
The Satellite Repair Route
EN
ARC_G06_NUM_02_STORY_01
The Satellite Repair Route