Let's solve each problem step by step.
---
Problem 1:
Question: There are 3 major mountain ranges in the United States. Penny and her father climbed 21 mountains. They climbed the same number of mountains in each mountain range. How many mountains did they climb in each range?
Solution:
- Total mountains climbed: 21
- Number of mountain ranges: 3
- To find the number of mountains climbed in each range, divide the total number of mountains by the number of ranges:
\[
\text{Mountains per range} = \frac{\text{Total mountains}}{\text{Number of ranges}} = \frac{21}{3} = 7
\]
Answer: They climbed
7 mountains in each range.
---
Problem 2:
Question: James and his sister were paddling a canoe down the river. Every 4 miles, they stopped to rest. If they traveled 12 miles, how many times did they stop to rest?
Solution:
- Distance traveled: 12 miles
- Rest interval: every 4 miles
- To find the number of stops, divide the total distance by the rest interval:
\[
\text{Number of stops} = \frac{\text{Total distance}}{\text{Rest interval}} = \frac{12}{4} = 3
\]
- Note: Since they stop at every 4-mile mark, they will stop 3 times during their journey.
Answer: They stopped
3 times.
---
Problem 3:
Question: Carla went camping with her family. The campground was next to a lake. Around the lake were 5 different campsites for tents. If there were 25 total tents, and there was an equal number of tents at each site, how many tents were in each campsite?
Solution:
- Total tents: 25
- Number of campsites: 5
- To find the number of tents per campsite, divide the total number of tents by the number of campsites:
\[
\text{Tents per campsite} = \frac{\text{Total tents}}{\text{Number of campsites}} = \frac{25}{5} = 5
\]
Answer: There were
5 tents in each campsite.
---
Final Answers:
1.
7 mountains in each range.
2.
3 stops.
3.
5 tents in each campsite.
\[
\boxed{7, 3, 5}
\]
Parent Tip: Review the logic above to help your child master the concept of 3rd grade social studies worksheets.