Integers Introduction — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Compare with <, >, or =: -12 > -15
When comparing negatives, the one closer to zero is greater.
2. Compare with <, >, or =: -1 < 1
All negative integers are smaller than every positive integer.
3. Order from least to greatest: -3, -9, 0, 5. The least value is -9.
Smallest integers in a set are the most negative values.
4. Order from least to greatest: 6, -6, 12, -12. The greatest value is 12.
The most positive integer is always the greatest in any list.
5. A mountain peak is fourteen hundred feet above sea level, written as 1400.
Heights above sea level are positive because they are above zero.
6. On a vertical number line, integers below zero point down.
On vertical lines, negatives extend downward because they sit below zero.
7. Compare with <, >, or =: -20 = -20
When two integers are identical, they are equal in value.
8. A scuba diver descends 30 feet. The integer is -30.
Descending under water is below zero, recorded as a negative integer.
9. Order from least to greatest: -2, 4, -7, 0, 3. The greatest value is 4.
Any positive integer outranks zero and all negative integers.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Bank deposit of $50
→ 50
-282
Withdrawal of $30 from account
→ -30
0
Elevation of Death Valley
→ -282
50
Sea level reference point
→ 0
-30
Positive integers represent gains and heights, while negative integers represent losses and depths.