Download presentation

Presentation is loading. Please wait.

Published byHarry Swallow Modified over 2 years ago

1
Presented by Barb Pecoraro

2
26 x37 54 x 97 = 81* 62 =

4
Traditional Partial Products Lattice Your Own Method I am confused

5
43 x 27 21 280 60 + 800 1,161 Do you recognize this method? I am confused.

6
2 43 x 27 301 + 860 1,161 Do you recognize this method? Did your parents try to teach you this method? I am more confused.

7
43 2 7 6 0 2 1 0 8 2 8 1 6 1 1 Do you recognize this method? What?

10
25 x 36 30 (6 x 5)

11
25 x 36 30 (6 x 5) 120 (6 x 20)

12
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5)

13
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5) 600 (30 x 20)

14
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5) + 600 (30 x 20)

15
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5) + 600 (30 x 20) 900

16
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5) + 600 (30 x 20) 900

17
25 x 36 30 (6 x 5) 120 (6 x 20) 150 (30 x 5) + 600 (30 x 20) 900

19
3 25 x 36 0 (6 x 5 = 30) Write the 0, regroup 3

20
3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 ( (6 x 2) + 3 = 15)

21
3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 0 ( (6 x 2) + 3 = 15) Write a 0; Cross out 3

22
1 3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 50 ( (6 x 2) + 3 = 15) Write a 0; Cross out 3 (3 x 5 = 15) Write the 5; regroup 1

23
1 3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 750 ( (6 x 2) + 3 = 15) Write a 0; Cross out 3 (3 x 5 = 15) Write the 5; regroup 1 ( (3 x 2) + 1 = 7) Write the 7

24
1 3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 750 ( (6 x 2) + 3 = 15) 900 Write a 0; Cross out 3 (3 x 5 = 15) Write the 5; regroup 1 ( (3 x 2) + 1 = 7) Write the 7 Add

25
1 3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 750 ( (6 x 2) + 3 = 15) 900 Write a 0; Cross out 3 (3 x 5 = 15) Write the 5; regroup 1 ( (3 x 2) + 1 = 7) Write the 7 Add

26
1 3 25 x 36 150 (6 x 5 = 30) Write the 0, regroup 3 750 ( (6 x 2) + 3 = 15) 900 Write a 0; Cross out 3 (3 x 5 = 15) Write the 5; regroup 1 ( (3 x 2) + 1 = 7) Write the 7 Add

28
Draw the lattice grid.

29
Write the two factors. 25 3 6

30
Multiply the red digits. 25 3 6 1 5

31
Multiply the green digits. 25 3 6 1 5 0 6

32
Multiply the blue digits. 25 3 6 1 5 0 6 3 0

33
Multiply the purple digits. 25 3 6 1 5 0 6 3 0 1 2

34
Add the digits in the lane with the thin arrow. 25 3 6 1 5 0 6 3 0 1 2 0 Start here.

35
Add the digits in the lane with the arrow. 25 3 6 1 5 0 6 3 0 1 2 00 1

36
Add the digits in the lane with arrow. 25 3 6 1 5 0 6 3 0 1 2 00 1 Regroup one group of ten in next lane.

37
Add the digits in the lane with the arrow. 25 3 6 1 5 0 6 3 0 1 2 00 1 9

38
25 3 6 1 5 0 6 3 0 1 2 00 1 9 The product is 900.

39
25 3 6 1 5 0 6 3 0 1 2 00 1 9

40
25 3 6 1 5 0 6 3 0 1 2 00 1 9

41
Repeated Addition

42
62 x 15

43
62 x 15 10 (5 x 2) 20 (10 x 2) 300 (5 x 60) +600 (10 x 60) 930

44
62 x 15 310 +620 930

45
62 1 5 0 2 1 0 0 6 3 0 9 30

48
http://www.superteacherworksheets.com/lattice/lattice2.pdf Lattice grid

Similar presentations

OK

1. Create a grid. Write one factor along the top, one digit per cell. 2. Draw diagonals across the cells. 3.Multiply each digit in the top factor by.

1. Create a grid. Write one factor along the top, one digit per cell. 2. Draw diagonals across the cells. 3.Multiply each digit in the top factor by.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on history of pie in math Free ppt on team building and leadership Ppt on producers consumers and decomposers for kids Ppt on six sigma green belt Ppt on power theft in india Ppt on world environment day posters Ppt on blood stain pattern analysis software Autonomic nervous system anatomy and physiology ppt on cells Download ppt on oxidation and reduction chemistry Ppt on vehicle security system