Adding Positive Negative Numbers and Decimals

When we are adding numbers with different signs, we follow the rule of...

• different signs subtract

• different signs positive

• different signs add and keep

• different signs negative

Same signs add and keep,
different signs subtract,
keep the sign of...

• the first number

• the smaller number

• the bigger value

• the last number

-40 + 15.05

• 55.05

• 24.95

• -24.95

• 14.65

ADD

+46.5

-11.3

• +57.8

• -57.8

• +35.2

• -35.2

When adding a NEGATIVE and POSITIVE number your result will be...

• Positive

• Negative

• Depends on which is bigger.

• None of the above

What is the answer sign when you start with a positive number and you add a bigger negative number to it? For example, the problem 10+(-23) would have what type of answer?

• positive

• negative

• zero

What sum does the set of tiles model?

• (-4) + (-2) = +6

• (+4) + (+2) = -6

• (+4) + (-2) = -6

• (-4) + (-2) = -6

Will the sum of 12 + (-3) be positive or negative?

• positive

• negative

This is an example of a zero pair:

-1 + 1 = 0

• True

• False

When we add a positive integer and negative integer, the result

• is always positive

• is always negative

• is zero

• can be positive or negative

Answer explanation

Soln: If the numerical value of positive integer is more, the result is positive otherwise it is negative.

Option (d) is correct.