Adding Subtracting Multiplying Dividing Integer

What is an integer?

• a whole number (not a fractional number) that can be positive, negative, or zero

• any number on the number line, including decimals

• only positive numbers

• only negative numbers

The four math operations are:

• addition

• subtraction

• equations

• multiplication

• division

• -50

• 4

• 50

• -10

Which expression represents a temperature starting in the morning at 12 degrees below zero rising 14 degrees at noon, and falling 5 degrees that night?

• 12 + 14 + (-5)

• - 12 + 14 + 5

•  12 + (-14) + (-5)

• - 12 + 14 + (-5)

Match

• 29

• -3 + 14

• 3

• 72(-3)

• 11

• -7 - (-10)

• -216

• 24 - (-5)

• 12

• 18 + (-6)

When a submarine starts at sea level, goes down 250 feet, rises 80 feet, and descends another 18 feet, how would this be shown mathematically?

• 250 + 80 + (-18)

• -250 + 80 - (- 18)

• 250 + -( 80) + (- 18)

• -250 + 80 + (-18)

• -25

• -13

• 25

• 13

• 7
  

• 6

• -6

• -7

Which situation could the integer -50 represent?

• a deposit of $50

• the temperature on a warm Spring day

• the distance driven on the way to the beach

• a decrease of 50 employees

A football team gained 9 yards on one play and then lost 22 yards on the next play. Write a sum of integers to find the overall change in field position.