Addition
Subtraction
Place Value
Main Idea
Fun
100

15,678 + 8,349

24,027

100

3,000 − 1,247

1,753

100

What is the value of the 5 in 458,123?

50,000

100

Renewable energy sources, such as wind and solar power, reduce pollution and help protect natural resources.

What's the main idea?

Main Idea: Renewable energy helps protect the environment.

100

What is the largest mammal? 

Blue Whale 

200

34,568 + 17,945

52,513

200

25,000 − 9,846

15,154

200

Round 987,654 to the nearest hundred thousand.

1,000,000

200

Ancient Egyptians built pyramids as tombs for their pharaohs.

What's the main idea?

Main Idea: Pyramids were built as tombs for Egyptian rulers.

200

Which planet is known as the 'Red Planet?"

Mars

300

123,456 + 78,945

202,401

300

87,654 − 29,875

57,779

300

Write 703,509 in expanded form.

700,000 + 3,000 + 500 + 9

300

The water cycle includes evaporation, condensation, precipitation, and collection.

What's the Main Idea? 

Main Idea: Water moves through a continuous cycle

300

What is the hardest natural substance on Earth?

Diamonds

400

456,789 + 245,678

702,467

400

400,000 − 158,946

241,054

400

Which number is greater: 812,499 or 812,409?

812,499

400

Teamwork allows people to solve problems more effectively than working alone.

What's the Main Idea?

Main Idea: Teamwork helps people achieve goals.

400

Which U.S. state has the MOST people?

California 

500

987,654 + 123,456

1,111,110

500

1,000,000 − 487,932

512,068

500

Which number is bigger? 1,000,000 or 999,999

1,000,000

500

Learning from mistakes helps people improve and grow.

What's the Main Idea? 

Main Idea: Mistakes are opportunities for learning.

500

What is Mr. Roff's son's name?

Logan