lattice multiplication with decimals l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Lattice Multiplication with Decimals PowerPoint Presentation
Download Presentation
Lattice Multiplication with Decimals

Loading in 2 Seconds...

play fullscreen
1 / 19

Lattice Multiplication with Decimals - PowerPoint PPT Presentation


  • 100 Views
  • Uploaded on

Lattice Multiplication with Decimals. Step-by-Step. 3.42 * 6.9 =. Ok! I know how to do Lattice, but I don’t remember how to multiply with decimals!!!. 3.42 * 6.9.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Lattice Multiplication with Decimals' - ranee


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

3.42 * 6.9 =

Ok! I know how to do Lattice, but I don’t remember how to multiply with decimals!!!

3 42 6 9
3.42 * 6.9

Make a grid the exact size of your problem. A 2 digit number times a 3 digit number gets a 2 x 3 grid. Draw a diagonal line in each box.

4

3

2

6

9

slide4

3.42 * 6.9

Place the decimal point above/beside the line in the grid.

.

4

3

2

.

6

9

3 42 6 95
3.42 * 6.9

.

Multiply 6 * 2 and place the answer in the grid where the lines meet.

4

3

2

1

6

.

2

9

slide6

3.42 * 6.9

.

Multiply 4 * 6 and place the answer in the grid where the lines meet.

4

3

2

2

1

.

6

4

2

9

slide7

3.42 * 6.9

Multiply 3 * 6 and place the answer in the grid where the lines meet. Use a zero as a place holder.

.

4

3

2

1

2

1

.

6

4

8

2

9

slide8

3.42 * 6.9

.

Multiply 2 * 9 and place the answer in the grid where the lines meet.

4

3

2

1

2

1

.

6

4

8

2

1

9

8

slide9

3.42 * 6.9

.

Multiply 4 * 9 and place the answer in the grid where the lines meet.

4

3

2

1

2

1

.

6

4

8

2

3

1

9

6

8

slide10

3.42 * 6.9

.

Multiply 3 * 9 and place the answer in the grid where the lines meet.

4

3

2

1

2

1

.

6

4

8

2

2

3

1

9

7

6

8

slide11

3.42 * 6.9

Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer.

.

4

3

2

1

2

1

.

6

4

8

2

2

3

1

9

7

6

8

8

slide12

3.42 * 6.9

Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer.

.

4

3

2

1

2

1

.

6

4

8

2

2

3

1

9

7

6

8

9

8

slide13

3.42 * 6.9

Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer.

.

4

3

2

1

2

1

+1

.

6

4

8

2

2

3

1

9

7

6

8

5

9

8

slide14

3.42 * 6.9

Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer.

.

4

3

2

1

2

1

+1

+1

.

6

4

8

2

2

3

1

9

3

7

6

8

5

9

8

slide15

3.42 * 6.9

Now add the diagonals and place the answer below the grid. Be sure to carry to the next diagonal if you have a 2 digit answer.

.

4

3

2

1

2

1

+1

+1

2

.

6

4

8

2

2

3

1

9

3

7

6

8

5

9

8

slide16

3.42 * 6.9

Now you need to place the decimal. Follow the lines until they meet.

.

4

3

2

1

2

1

+1

+1

2

.

6

4

8

2

2

3

1

9

3

7

6

8

5

9

8

slide17

3.42 * 6.9

Now drop on the diagonal to place the decimal.

.

4

3

2

1

2

1

+1

+1

2

.

6

4

8

2

2

3

1

9

3

7

6

8

.

5

9

8

slide18

3.42 * 6.9

Your answer is 23.598!!

.

4

3

2

1

2

1

+1

+1

2

.

6

4

8

2

2

3

1

9

3

7

6

8

.

5

9

8

slide19

That is Soooo Cool!!!

Thanks!

3.42 * 6.9=

23.598