Examples with solutions for Multiplication and Division of Signed Mumbers: Multiplication of a negative number by a neutral number

Exercise #1

What is the answer to the following exercise?

(−1)⋅3= (-1)\cdot3=

Video Solution

Step-by-Step Solution

Let's recall the law:

(+x)×(−x)=−x (+x)\times(-x)=-x

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

−1×+3=−3 -1\times+3=-3

Answer

−3 -3

Exercise #2

Complete the following exercise:

(−2)⋅1= (-2)\cdot1=

Video Solution

Step-by-Step Solution

Let's recall the law:

(+x)×(−x)=−x (+x)\times(-x)=-x

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

−2×+1=−2 -2\times+1=-2

Answer

−2 -2

Exercise #3

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

Video Solution

Step-by-Step Solution

Let's recall the law:

(+x)×(−x)=−x (+x)\times(-x)=-x

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

−7×+1=−7 -7\times+1=-7

Answer

−7 -7

Exercise #4

What is the answer to the following exercise?

6⋅1= 6\cdot1=

Video Solution

Step-by-Step Solution

Let's recall the law:

(+x)×(+x)=+x (+x)\times(+x)=+x

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

+6×+1=+6 +6\times+1=+6

Answer

6 6

Exercise #5

Complete the following exercise:

(−3)⋅(−1)= (-3)\cdot(-1)=

Video Solution

Step-by-Step Solution

Let's recall the rule:

(−x)×(−x)=+x (-x)\times(-x)=+x

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

−3×−1=+3 -3\times-1=+3

Answer

3 3

Exercise #6

What is the answer to the following exercise?

(−4)⋅(−1)= (-4)\cdot(-1)=

Video Solution

Step-by-Step Solution

Let's recall the rule:

(−x)×(−x)=+x (-x)\times(-x)=+x

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

−4×−1=+4 -4\times-1=+4

Answer

4 4

Exercise #7

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

Video Solution

Step-by-Step Solution

Let's remember the rule:

(+x)×(−x)=−x (+x)\times(-x)=-x

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

−16×+1=−16 -16\times+1=-16

Answer

−16 -16

Exercise #8

What is the answer to the following exercise?

1⋅(−1)= 1\cdot(-1)=

Video Solution

Step-by-Step Solution

Let's remember the rule:

(+x)×(−x)=−x (+x)\times(-x)=-x

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

+1×−1=−1 +1\times-1=-1

Answer

−1 -1

Exercise #9

Complete the following exercise:

(−10)⋅(−1)= (-10)\cdot(-1)=

Video Solution

Step-by-Step Solution

Let's remember the rule:

(−x)×(−x)=+x (-x)\times(-x)=+x

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

−10×−1=+10 -10\times-1=+10

Answer

10 10

Exercise #10

Complete the following exercise:

2⋅1= 2\cdot1=

Video Solution

Step-by-Step Solution

Let's remember the rule:

(+x)×(+x)=+x (+x)\times(+x)=+x

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

+2×+1=+2 +2\times+1=+2

Answer

2 2