# Lattice Multiplication - PowerPoint PPT Presentation

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## Lattice Multiplication

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### A lattice grid is constructed. The multiplication is done. That is followed by addition, like in traditional multiplication. 3568 x 24 ... – PowerPoint PPT presentation

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Title: Lattice Multiplication

1
LatticeMultiplication
N.FL.05.04 Multiply a multi-digit number by a
two-digit number recognize and be able to
explain common computational error, such a not
accounting for place value.
2
What is it?
• Method of multiplying large numbers using a grid
• Algorithmically equivalent to regular long
multiplication
• Breaks the process into smaller steps

3
How does it work?
• A lattice grid is constructed
• The multiplication is done
multiplication

4
• 3568 x 24?

5
Step 1 Make the grid
6
Step 2 Make diagonal lines
7
Step 3 Write the numbers
8
Step 4 Multiply
9
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10
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11
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12
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13
Step 5 Add the numbers in the
diagonals
14
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15
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16
Step 6 Read the left side and bottom and write