Every part of a true sentence must be "true"
If any one part of the sentence is false, the whole sentence is false despite many other true statements.
Ex. Rattlesnakes live in North America, have fangs, feed on small rodents, and crush their prey. (F)…one part of the sentence is false (they don’t crush their prey).
Pay close attention to negatives, qualifiers, absolutes, and long strings of statements.
Negatives can be confusing. If the question contains negatives, as "no, not, cannot". Drop the negative and read what remains.
Ex. Since penguins cannot fly, they cannot swim well either. (F)…penguins can swim. Since there was a “cannot” the answer is opposite or false.
Qualifiers are words that restrict or open up general statements. Words like "sometimes, often, frequently, ordinarily, generally" open up the possibilities of making accurate statements. They make more modest claims, are more likely to reflect reality, and usually indicate "true" answers.
Ex. Most coniferous trees (evergreens) have needles throughout the year. (T)…the qualifier “most” refers to almost all coniferous trees. There are a few coniferous trees that lose their needles during winter months, but the qualifier excludes these and makes the statement true.
Absolute words restrict possibilities. "No, never, none, always, every, entirely, only" imply the statement must be true 100% of the time and usually indicate "false" answers
Ex. Every mammal gives birth to live young. (F)…Not all mammals give birth to live young, which the word “every” implies. The platypus lays eggs.
Long sentences often include groups of words set off by punctuation. Pay attention to the "truth" of each of these phrases. If one is false, it usually indicates a "false" answer
Ex. Lions are native to Africa and Asia. They often live in prides and are carnivorous predators. Lions in South Africa have white fur due to a recessive gene. Lions will also eat berries if hungry enough. (F)…Even though most of the phrases are true, the phrase about lions eating berries is false. Thus, the entire statement is false.
Often true/false tests contain more true answers than false answers. You have more than 50% chance of being right with "true". However, your teacher may be the opposite. Review past’s tests for patterns...