Emek and Luna started climbing a mountain trail with 8 trail markers in their backpack. At the first checkpoint, they collected 5 more markers. Later, they used 4 markers to mark a tricky part of the path for other hikers. Before the final climb, they counted their markers to be sure they had enough for the summit. Their careful adding and subtracting showed they had exactly what they needed, and they happily reached the top together.
Challenges
Challenge 1 of 5
Challenges
Challenge 1 of 4
Hint
Start with 8 markers and add 5 more.
After Emek and Luna collected 5 more trail markers, how many markers did they have before using any?
11121314Correct! They had 13 markers before using any.
Not quite. Add the 5 collected markers to the 8 they started with.
Next🎉 Congrats! You got this question!
Hint
First add, then subtract.
After collecting 5 markers and then using 4 markers, how many trail markers did Emek and Luna have left?
Correct! They had 9 trail markers left.
Try adding 5 to 8 first, then subtracting 4.
Next🎉 Congrats! You got this question!
Hint
Find the total after adding 5 and then taking away 4.
Before the final climb, Emek says they have 8 trail markers left. Luna says they have 9. Who is correct?
Emek is correct.Luna is correct.They are both correct.There is not enough information.Correct! They had 9 markers left, so Luna is correct.
Check the two steps in order: add the new markers first, then subtract the ones they used.
Next🎉🎉🎉🎉🎉🎉🎉🎉
🎉 Congrats! You finished this challenge set!
