Review Lesson 1-3: Match each number set into its number family.
the nonnegative integers
the counting numbers
..., -3, -2, -1, 0, 1, 2, 3, ...
Natural Numbers
Whole Numbers
Integers
Vocabulary Review:Fill in the blank: You must reverse the direction of the inequality symbol when you multiply both sides of an inequality by a number that is __?__.
less than or equal to 0
greater than 0
greater than or equal to 0
less than 0
Vocabulary Review: Decide if the inequality symbol will change when you solve each inequality. Categorize the inequalities appropriately.
3t < 6
-8s < 4
5x ≤ -10
-4 ≤ -2a
Reverse
Stay the same
Use Your Vocabulary: Use the words at least or at most to complete each sentence.
at least
at most
You must be __?__ 18 years of age to vote in a national election.
An elevator can safely carry __?__ 15 people.
When water boils, you know the temperature is __?__ 212°F.
If all books cost $3 and Jane has $20, she can buy __?__ books.
Use Your Vocabulary: Now match the appropriate inequality symbol with each sentence.
≥
≤
You must be __?__ 18 years of age to vote in a national election.
An elevator can safely carry __?__ 15 people.
When water boils, you know the temperature is __?__ 212°F.
If all books cost $3 and Jane has $20, she can buy __?__ books.
