Cut the knot: learn to enjoy mathematics
A math books store at a unique math study site. Learn to enjoy mathematics.
Google
Web CTK
Best sites for teachers
Sites for teachers
Sites for parents
Terms of use
Awards

Interactive Activities
CTK Exchange
CTK Insights - a blog

Games & Puzzles
What Is What
Arithmetic/Algebra
Geometry
Probability
Outline Mathematics
Make an Identity
Book Reviews
Eye Opener
Analog Gadgets
Inventor's Paradox
Did you know?...
Proofs
Math as Language
Things Impossible
Visual Illusions
My Logo
Math Poll
Cut The Knot!
MSET99 Talk
Other Math sites
Front Page
Movie shortcuts
Personal info
Reciprocal links
Privacy Policy

Guest book
News sites

Recommend this site

Best sites for teachers
Sites for teachers
Sites for parents

Education & Parenting

Manifesto: what CTK is about Search CTK Buying a book is a commitment to learning Table of content Things you can find on CTK Chronology of updates Email to Cut The Knot Recommend this page

Outline Mathematics
Arithmetic Word Problems

Insect flight record

Here's a problem to tackle:

 

How high can insects fly?

The Empire State Building is 1,450 feet high. Insects have flown up to 2,250 feet higher than the Empire State Building. How high can insects fly?

Solution


Copyright © 1996-2008 Alexander Bogomolny

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Solution

 

How high can insects fly?

The Empire State Building is 1,450 feet high. Insects have flown up to 2,250 feet higher than the Empire State Building. How high can insects fly?

(In the text below, some words are omitted. These have been underlined. Click just above the line. See what happens.)

Well, no doubt this is an addition problem. Why? Because we measure the height from the up, right? So an insect trying to establish a world record, should start on the ground, then fly past the of the Empire State Building which is at the height of feet and continue from there for another feet covering in all the total of 1,450 + 2,250 feet. The insect world record is then feet.

References

  1. E. Charlesworth, 225 Fantastic Facts Math Word Problems, Scholastic, 2001

Copyright © 1996-2008 Alexander Bogomolny

28699824Page copy protected against web site content infringement by Copyscape


Search:
Keywords:


Latest on CTK Exchange
Math
Posted by Laura
2 messages
06:56 AM, Apr-15-08

Divisibility rules - Jargon buste ...
Posted by Carolyn
2 messages
08:35 AM, Apr-04-08

drawing puzzle
Posted by martin gran
31 messages
06:53 PM, May-09-08

Distance to the horizon
Posted by Monty
3 messages
04:38 PM, May-08-08

Mistake on the page (an aside, Be ...
Posted by Max
4 messages
10:28 AM, Feb-28-08

Deriving functions based on diffe ...
Posted by ke_45
1 messages
12:47 PM, May-10-08

A typo in
Posted by alexwajn
1 messages
11:36 PM, Apr-19-08