Multiply Rational Numbers - Common Core: 7th Grade Math

Card 0 of 6

Question

Solve:

$-1\times3$

Answer

We know the following information:

$1\times3=3$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-1\times3=-3$

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Question

Solve:

$-3\times10$

Answer

We know the following information:

$3\times10=30$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-3\times10=-30$

Compare your answer with the correct one above

Question

Solve:

$-5\times11$

Answer

We know the following information:

$5\times11=55$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-5\times11=-55$

Compare your answer with the correct one above

Question

Solve the following:

$-12\times-12$

Answer

We know the following information:

$12\times12=144$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-12\times-12=144$

Compare your answer with the correct one above

Question

Solve:

$-11\times-9$

Answer

We know the following information:

$11\times9=99$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-11\times-9=99$

Compare your answer with the correct one above

Question

Solve:

$-9\times-9$

Answer

We know the following information:

$9\times9=81$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

A negative number multiplied by a positive number will always equal a negative number

A negative number multiplied by a negative number will always equal a positive number

Thus,

$-9\times-9=81$

Compare your answer with the correct one above

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