Negative Numbers Flashcards

All 6 cards in this deck

What is the sign of the answer when you multiply or divide two numbers with the same sign?

Positive.
e.g. $-6 \div -2 = 3$

What is the sign of the answer when you multiply or divide two numbers with different signs?

Negative.
e.g. $-4 \times 5 = -20$

What happens when you subtract a negative number?

e.g. $5 - (-3)$

It becomes an addition.
$5 - (-3) = 5 + 3 = 8$

What happens when you add a negative number?

e.g. $4 + (-6)$

It becomes a subtraction.
$4 + (-6) = 4 - 6 = -2$

True or false? $(-3)^2$ and $-3^2$ give the same answer.

False. $(-3)^2 = 9$ but $-3^2 = -9$, because the power applies to the 3 only.

True or false? Multiplying three negative numbers together gives a positive answer.

False. An odd number of negative factors gives a negative answer.