Reading Comprehension • Saddleback Educational Publishing ©2002 86 3 Watson, Irvine, CA 92618•Phone (888)SDL-BACK•www.sdlback.com
Na m e : ___ _
Directions:Date:Read each sentence. Identify it as the main idea or as a detail. Write MI or D.Each sentence in a paragraph has one of two roles.
It is either the topic sentence (the star) or a detail
(supporting cast)._____ 1. A diamond is not only the hardest mineral known, but
also one of the most valuable gems.
_____ 2. Gems are minerals that are valued for their rarity and
beauty.
_____ 3. Some popular gemstones are rubies, emeralds,
sapphires, and opals.(A)
_____ 1. The Saguaro cactus is tall and thin
and can grow 50 feet high!
_____ 2. Cactuses come in many shapes and
sizes.
_____ 3. The barrel cactus is short and round.(D)
_____ 1. An octopus is a soft-bodied sea creature.
_____ 2. There are about 50 kinds of octopi, most
about the size of a man’s fist.
_____ 3. All octopi have eight arms, or tentacles,
which are used to catch prey.(B)
_____ 1. One way to earn money is by doing chores
or services for others, such as babysitting or
mowing lawns.
_____ 2. Another way is to sell things they make or
have, such as setting up a drink stand or
contributing to a yard sale.
_____ 3. Children have many ways to earn money for
the things they want or need.(C)