Math netGabriela BarrerasMaria José cardonaTopic : multiplication

Made by : Gabriela Barreras y Maria Jose Cardona Topic : multiplication

WHAT IS MULTIPLICATION ?

Multiplication is an Operation of composition is repeatedly adding the first amount as many times as indicated by the second.

*Examples: 4 x 3 = 4 + 4 + 4 or like 9 x 2 = 9 + 9 = 18

*You can also paste the multiplication tables in a place where you always see them like your bedroom or also in notebooks etc.

*2x4=8 2x7= 14 2x5=10 2x8=16 2x6=12 2x9=18 …….. Etc

Parts of the multiplication*the terms of The multiplication are factor and product

2x9 =18The factor and the product

*The factor number 1 that is the 2 is multiplied by the factor 2 that is 9 and it gives a product that is 18

*Exaples: 3x6 = 18 there are many ways to get the same result.

Multiplacation in arrays

*

!!! !!! !!! !!! !!! When you multiply, think of the multiplication

symbol as having the meaning rows of . The fact 3 x 5 would actually mean “3 rows

of 5” To solve this fact, draw 3 rows of 5 symbols. 3 rows of 5 equals 15 symbols 3x5=15 Symbols arranged in neat rows and columns

are called arrays.

Multiplication with fingers•You can also use your fingers to multiply counting and

remeber all multiplication tables •It will be easy !!!

•Example:

multiplication with fingers is easy remember when you use your finger to multiply your hands have to be looking at you or backwards .

Multiplication with a little bit of division

Sometimes you need to use division to check your ansers and when you do a division you’ll check it always by doing a multiplication Example: :

How to multiply by two digits?

*when you multiply by two digits example : 21586 x 23 = 586 x23 1758 11720 13478

The zero is because yuo are going to start the decimal number soy you let it there .

More examples:

How to multiply by 2 digits in 8 steps

Step 1: step 2 : step 3 : step 4 : step 5 : 1 21 21 1586 586 586 586 586 x23 x23 x23 x23 x23--------- ---------- --------- --------- --------- 8 58 1758 1758 20

step6 step7 step 8 11 11 11 586 586 586 x 23 x 23 x 23--------------------- 1758 1758 1758 720 720 720 the total is : 2.478 ---------- ----------

Don’t forget this

children !!

Is the same multiply ?Is the same multiply this by this? Or do this than do this ?

Multiply can help you to a lot of things it can do that you dont add a lot.

256 256 x2 that 256512 512Yes is the same Multiplication will always help you in anyway you

want .

How to do it ?

There are a lot of ways to do it is like adding but in shortest form and easier exmple. 12 x 2 is like saying 12 + 12 or saying 7 x 2 like 7 + 7The multiplication is of memory.

Where to used ?

You can use the multiplication when you have to add something but or exact calculation

How to used ?If you are going to buy something in the super market or you go to the bank to get money or to pay something

wow?

the thirteen members of the ruiz family went to lunch at crepes and waffles. Each member asked for a plate of 5.000 pesos.

Whats the total cost of the family?

5,000

x13

15.000

+ 50.000

65.000

If each one of the Gonzales family eats 7 hot dogs and they are 25 members .

How many hot dogs they have eaten in total ?

25

x7

175

Problem 1 Problem 2

Problems related with multiplication

Conclutions:multiplication is involved in our dalily life we can use multiplication for everything  there are also many forms to multiply examples: arays fingers graphs etc  Multiplication helps us because he doesn’t let that we add many times the same number .

This is very interesting

Bibliography : google , wikipedia , ideas Gabriela Barreras  Maria Jose Cardona and help of Andres Uribe

Bibliography:

Multiplication is a good You have to practice it a lot and remember I love

you all jaja

Thank for your attention

EXERCISE YOU CAN DO IN YOUR HOUSE

Multiplication by 1 digit

78 42 x7 x5 92 57 x3 x9

36 457 x2 x8

Multiplication by 2 digit

32 70 x 41 x 20 36 55 x12 x 49

35 18 x 31 x 12