Addition of Integers

What do you call to a whole number from the set of negative, non-negative, and positive numbers.

• Fraction

• Integer

• Natural Number

To add integers with the same sign, add their absolute values, and keep/copy their sign.

• True

• False

To add integers with different signs,  subtract the number with the smaller absolute value by the number with the greater absolute value and then keep/copy the sign of the number with the smaller absolute value.

• True

• False

Answer explanation

To add integers with different signs,  subtract the number with the greater absolute value by the number with the smaller absolute value and then keep/copy the sign of the number with the larger absolute value.

• 1

• 36

A submarine at 21 feet below sea level suddenly moves up about 6 feet.  At what depth is the submarine located now?

• 15 feet above sea level

• 15 feet below sea level

• 27 feet above sea level

• 27 feet below sea level

Answer explanation

"below" indicates negative

"moves up" means addition. Therefore,

-21+6=21-6=15

Copy the sign of the larger number

Answer:-15 or 15 feet below sea level

A football team gained 6 yards and then lost 10 yards. Where is the football team now?

• lost 4 yards

• gained 4 yards

• lost 14 yards

• gained 14 yards

Answer explanation

Gained 6  can be represented by + 6

And is the + sign

Lost 10 can be represented by  -10

We get +6 + -10 and +6 + -10 = -4

Overall the football team has lost 4 yards.