Examples on Integers

Example 1:

Plot the following integers on the number line:

-121, -97, -82, -67, -43, -10, 0, 10, 36, 55, 64, 77, 110, 126, 147.

Solution:

In the above number line, each number has been plotted with a red dot.

Example 2:

Solve the following:

• 5 + 3 = ?
• 5 + (-3) = ?
• (-5) + (-3) = ?
• (-5) x (-3) = ?

Solution:

• 5 + 3 = 8
• 5 + (-3) = 5 – 3 = 2
• (-5) + (-3) = -5 – 3 = -8
• (-5) x (-3) = 15

Example 3:

Solve the following product of integers:

• (+5) × (+10)
• (12) × (5)
• (- 5) × (7)
• 5 × (-4)

Solution:

• (+5) × (+10) = +50
• (12) × (5) = 60
• (- 5) × (7) = -35
• 5 × (-4) = -20

Example 4:

Solve the following division of integers:

• (-9) ÷ (-3)
• (-18) ÷ (3)
• (4000) ÷ (- 100)

Solution:

• (-9) ÷ (-3) = 3
• (-18) ÷ (3) = -6
• (4000) ÷ (- 100) = -40