Multiplication and Division of Signed Mumbers - Examples, Exercises and Solutions

What is the answer to the following exercise?

$1\cdot(-1)=$

Let's remember the rule:

$(+x)\times(-x)=-x$

Therefore, the sign of the exercise result will be negative:

$+1\times-1=-1$

$-1$

Complete the following exercise:
$(-7)\cdot(1)=$

Let's recall the law:

$(+x)\times(-x)=-x$

Therefore, the sign of the exercise result will be negative:

$-7\times+1=-7$

$-7$

Complete the following exercise:
$(-16)\cdot(1)=$

Let's remember the rule:

$(+x)\times(-x)=-x$

Therefore, the sign of the exercise result will be negative:

$-16\times+1=-16$

$-16$

What is the answer to the following exercise?

$(-1)\cdot3=$

Let's recall the law:

$(+x)\times(-x)=-x$

Therefore, the sign of the exercise result will be negative:

$-1\times+3=-3$

$-3$

Complete the following exercise:

$(-2)\cdot1=$

Let's recall the law:

$(+x)\times(-x)=-x$

Therefore, the sign of the exercise result will be negative:

$-2\times+1=-2$

$-2$

Complete the following exercise:

$2\cdot1=$

Let's remember the rule:

$(+x)\times(+x)=+x$

Therefore, the sign of the exercise result will be positive:

$+2\times+1=+2$

$2$

Complete the following exercise:

$(-10)\cdot(-1)=$

Let's remember the rule:

$(-x)\times(-x)=+x$

Therefore, the sign of the exercise result will be positive:

$-10\times-1=+10$

$10$

Complete the following exercise:

$(-3)\cdot(-1)=$

Let's recall the rule:

$(-x)\times(-x)=+x$

Therefore, the sign of the exercise result will be positive:

$-3\times-1=+3$

$3$

What is the answer to the following exercise?

$6\cdot1=$

Let's recall the law:

$(+x)\times(+x)=+x$

Therefore, the sign of the exercise result will be positive:

$+6\times+1=+6$

$6$

What is the answer to the following exercise?

$(-4)\cdot(-1)=$

Let's recall the rule:

$(-x)\times(-x)=+x$

Therefore, the sign of the exercise result will be positive:

$-4\times-1=+4$

$4$

$+5:+30=$

Let's write the exercise in the form of a simple fraction:

$\frac{5}{30}=$

We'll break down the 30 into a multiplication exercise:

$\frac{5}{5\times6}=$

Let's reduce the 5 in both the numerator and denominator of the fraction, and we'll get:

$\frac{1}{6}$

$\frac{1}{6}$

$+24:+8=$

Let's write the exercise in the form of a simple fraction:

$\frac{24}{8}=$

We'll factor 24 into a multiplication exercise:

$\frac{3\times8}{8}=$

We'll reduce the 8 in both the numerator and denominator of the fraction and get:

$\frac{3}{1}=3$

$3$

What will be the sign of the result of the next exercise?

$(-2)\cdot(-4)=$

It's important to remember: when we multiply a negative by a negative, the result is positive!

You can use this guide:

Positive

What will be the sign of the result of the next exercise?

$(-3)\cdot(-4)=$

Let's remember the rule:

$(-x)\times(-x)=+x$

Therefore, the sign of the exercise result will be positive:

$-3\times-4=+12$

Positive

What will be the sign of the result of the next exercise?

$(-2)\cdot(-\frac{1}{2})=$

Let's recall the law:

$(-x)\times(-x)=+x$

Therefore, the sign of the exercise result will be positive:

$-2\times-\frac{1}{2}=+1$

Positive