At the dinosaur dig site, Emek and Luna found footprints crossing three marked sections. To build a visitor trail, they made models of the prints and arranged them in equal rows. The first section needed 3 rows of 7 prints, while the second needed 4 rows of 6. For the third section, they planned 5 rows of 5 prints. Emek and Luna used multiplication to find that the sections needed 21, 24, and 25 prints. They compared the totals, prepared the correct number for each section, and completed a clear footprint trail for the visitors.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
Compare the totals for the three sections: 21, 24, and 25.
Which section of the footprint trail needs the greatest number of prints?
The first sectionThe second sectionThe third sectionThe first and second sections need the same numberCorrect! The third section needs 25 prints, which is the greatest total.
Try again. Compare 21, 24, and 25 to find the greatest total.
Next🎉 Congrats! You got this question!
Hint
Add the number of prints needed for the first section and the second section.
Emek prepares the prints for the first and second sections together. How many prints does he need in all?
Correct! The first two sections need 45 prints altogether.
Try again. The first section needs 21 prints and the second needs 24.
Next🎉 Congrats! You got this question!
Hint
Add the totals for each possible pair of sections and compare each sum with 50.
Luna has 50 prints ready. She wants to use them for exactly two of the three sections with no prints left over. Which two sections should she choose?
The first and second sectionsThe first and third sectionsThe second and third sectionsNo pair of sections uses exactly 50 printsCorrect! None of the pairs needs exactly 50 prints.
Try again. Check the total for each pair: first and second, first and third, and second and third.
Next🎉🎉🎉🎉🎉🎉🎉🎉
🎉 Congrats! You finished this challenge set!
