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write the steps for how to use a number line to multiply a 2-digit number by 20. give an example

Respuesta :

To obtain the multiplication of [tex]2[/tex] digits number by [tex]20[/tex] first jump two times the [tex]2[/tex] digit number then jump [tex]10[/tex] times by the result we get in step 1.

Further explanation:

A straight line that has all real numbers is known as number line.

The steps involve in multiplying 2-digit number by [tex]20[/tex] are as follows.

1. First multiply the two digit number by 2 and the get the result.

2. Multiply the result by [tex]10[/tex] to obtain the final result.

For example we have to multiply [tex]15[/tex] by [tex]20[/tex] on the number line.

Following are the steps involve in multiply [tex]15[/tex] by [tex]20[/tex] on the number line.

Step 1

Multiply 15 by 2 as,

[tex]\begin{gathered}A = 15 \cdot 2 \\= 30 \\ \end{gathered}[/tex]

Make 2 jumps of 15 to get 30.

Step 2

Multiply [tex]30[/tex] to [tex]10[/tex] to obtain the final result.

[tex]\begin{gathered}B = 30 \cdot 10 \\ = 300 \\ \end{gathered}[/tex]

Now make 10 jumps of 30 to get [tex]300[/tex].

To obtain the multiplication of 2 digits number by [tex]20[/tex] first jump two times the 2 digit number then jump [tex]10[/tex] times by the result we get in step 1.

Kindly refer to the image attached to the question.

Learn more:

1. Problem on multiplication https://brainly.com/question/573729

2. Problem on division https://brainly.com/question/545132

3. Problem on lines https://brainly.com/question/8554769

Answer details:

Grade: Junior school

Subject: Mathematics

Chapter: Number line

Keywords: two digit number, number line, twenty, multiply, add, jump, examples, multiplication.

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