approximate computation

Presents a handbook of questions which must be solved by estimation, offering techniques and advice for estimating a number of answers to questions for finance and technology.

Teaches how to round numbers to the nearest ten, following a little boy and his father as they buy food at a farmer's market.

Presents the concept of estimation and how important it can be to give an approximate measure, such as when adding a pinch of salt to a recipe or rounding off one's age.

Simple text and photographs introduce the concept of estimation, providing examples of ways one can estimate time and amounts.

Introduces young readers to people who predict and prepare for natural disasters such as volcanologists, seismologists, and meteorologists.

Explains how data and information can help you form a guess or an estimate about something.

Text and illustrations about cars and trucks introduce the concepts of measurement and estimation.

Presents a counting book about some of the things seen in a zoo such as elephants, giraffes, peanuts, and peacocks.

Text and photographs introduce everyday uses for estimation.

Two friends try to estimate how long they will have to wait in line to get on the fantastic new ride.