Grade level: 4-5th grades

Skills: Place Value & Expanded Notation

Related environmental issues: Water Quality

Area level: Global

Does your house have water faucets that provide you enough water for drinking and taking a shower? The answer is probably yes. But not all people have access to clean and safe water. Many people around the world have no choice but drinking dirty, harmful water. Each year, about 502,000 people die from diarrhea because of drinking unsafe water.

1. What is the value of the underlined digit in 502,000?
2. What place is the 5 in 502,000?
3. What is the expanded form of 502,000?
   

   a.50,000 + 2,000
   b.500,000 + 20,000
   c.50,000 + 200
   d.500,000 + 2,000

Data source: WHO, 2015

(photo: peakwater.org)

Answer keys

1. 2,000
2. hundred thousands
3. d