Emek and Luna entered a hidden valley where four trail markers showed elevations in kilometers above sea level: 1.275, 1.257, 1.305, and 1.28. Their compass instructed them to visit the markers from lowest to highest before climbing to the lookout. Emek compared the digits by place value, while Luna wrote 1.28 as 1.280 to make the comparison clearer. They determined the correct order was 1.257, 1.275, 1.280, and 1.305. Following the markers in that sequence kept them on the rising trail. After passing the final marker, they climbed safely to the lookout and enjoyed a wide view across the valley.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
Write 1.28 as 1.280 and compare it with the elevations greater than 1.275.
Emek has reached the marker at 1.275 kilometers. Following the lowest-to-highest order, which marker should he visit next?
1.2571.281.3051.275Correct! 1.280 comes after 1.275 and before 1.305.
Try again. Compare the elevations digit by digit after writing them to the same number of decimal places.
Next🎉 Congrats! You got this question!
Hint
Think of 0.280 as a number of thousandths.
Luna writes 1.28 as 1.280. In 1.280, how many thousandths are represented by the decimal part 0.280?
Correct! 0.280 represents 280 thousandths.
Try again. The three digits after the decimal point show the number of thousandths.
Next🎉 Congrats! You got this question!
Hint
Compare 1.290 with 1.280 and 1.305 digit by digit.
Emek and Luna discover a fifth trail marker at 1.290 kilometers. Where should it be placed among the original markers from lowest to highest?
Between 1.257 and 1.275Between 1.275 and 1.280After 1.305Between 1.280 and 1.305Correct! 1.290 is greater than 1.280 but less than 1.305.
Try again. Compare the tenths, hundredths, and thousandths of the nearby elevations.
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🎉 Congrats! You finished this challenge set!
