1.3 Addition and Subtraction

Objective: Use addition and subtraction of whole numbers to solve problems.

Number of the DayIf you add 80 to me and subtract 3, you get 102.

What number am I?

George Washington, John Adams, and Thomas Jefferson lived a total of 240 years. Adams lived the longest, 23 years longer than Washington. Jefferson lived 16 years longer than Washington. How old was each President when he died?

Video about the Gemini Space Program from UnitedStreaming.

Program Years Total Hours in Space

Mercury 1961 – 1963 54

Gemini 1965 – 1966 1940

Apollo 1968 – 1972 7506

Skylab 1973 – 1974 12352

Video about Skylab from UnitedStreaming.

Image AttributionsSlide 1: Image: 'Heeley City Farm 014_edited-1 hopscotch' www.flickr.com/photos/49503155381@N01/2221162502

Slide 2: Image: 'untitled' www.flickr.com/photos/49143508@N00/48145609