Download presentation

Presentation is loading. Please wait.

Published byEric Small Modified over 7 years ago

2
Lattice Multiplication is an alternative way of doing higher level multiplication.

3
By creating a series of grids (boxes) and following a few rules you can easily and neatly find the product to large numbers.

4
Today’s Example: 64 x 9 =

5
First, write the larger number down.

6
6 4

7
Draw a rectangle below this number.

8
6 4

9
The larger number is made up of 2 digits, so cut the rectangle into two boxes.

10
6 4

11
Write the other problem number on the right of the rectangle.

12
6 4 9

13
Cut the boxes diagonally. For each box draw a line from the bottom left to the top right.

14
6 4 9

15
Now we do basic multiplication. Start with the 6. If we go down from the 6 and across from the 9 they “meet” in that first box.

16
6 4 9

17
6 x 9 = 5 4 Write 5 in the top half of the box and write 4 in the bottom half of the box.

18
6 4 9 5 4

19
Move on to the 4. If we go down from the 4 and across from the 9 they “meet” in that second box.

20
6 4 9 5 4

21
4 x 9 = 3 6 Write 3 in the top half of the box and write 6 in the bottom half of the box.

22
6 4 9 5 4 3 6

23
Extend your diagonal lines down.

24
6 4 9 5 4 3 6

25
Add the numbers inside the boxes. Use the diagonal lines to guide you. Start on the right with the 6 then move to the left. 6 + nothing = 6. So put a 6 on the right of the diagonal lines.

26
6 4 9 5 4 3 6 6

27
3 + 4 = 7. So put a 7 between the diagonal lines.

28
6 4 9 5 4 3 6 6 7

29
5 + nothing = 5. So put a 5 to the left of the diagonal lines.

30
6 4 9 5 4 3 6 6 7 5

31
That’s it! 576 is your answer. 6 4 x 9 = 5 7 6

32
ON YOUR OWN Try the following problem using the rules from the example. The answer will be the first thing given in TUTORIAL 2.

33
On Your Own Problem: 52 x 7 =

Similar presentations

© 2023 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google