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# Math 553 Lattice Multiplication

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### Math 553 Lattice Multiplication

2. 2. Welcome to Lattice Multiplication
3. 3. What is Lattice Multiplication? Lattice multiplication is a method of multiplying large numbers using a grid. This method breaks the multiplication process into smaller steps; which for some, makes it easier.
4. 4. Setting up the Lattice  First draw a grid that has as many rows and columns as the multiplicand and the multiplier. The grid below shows multiplying a 2-digit number by a 2-digit number. 1 2 1 2
5. 5. Drawing the grid:
6. 6. Multiplicand vs. Multiplier  What is a Multiplicand?  A multiplicand is the number that is or is to be multiplied by another number.  What is a Multiplier?  A multiplier is the number by which another number is multiplied  For example: in 35 × 10, the multiplicand is 35 and the multiplier is 10.
7. 7. Multiplicand and Multiplier?
8. 8. Where to place the Multiplicand and Multiplier Example: 35 × 10 Multiplicand 3 5 1 Multiplier 0
9. 9. Setting up the Lattice  Draw a diagonal line Ten through each box from the upper right corner to the lower left s corner.  This gives us a spot Ones for the tens place and a spot for the ones place.
10. 10. Quick review: Place Value
11. 11. How to put the answer into the lattice Tens 1 4 One
12. 12. 1 × 1 Lattice Multiplication Video
13. 13. 1 × 2 Lattice Multiplication Video
14. 14. 2 × 2 Lattice Multiplication  Example:
15. 15. First Second Third Fourth Fifth Last Answer:
16. 16. 2 × 2 Lattice Multiplication Video
17. 17. Tips to Go:
18. 18. References:  http://www.coolmath4kids.com/times-tables/times-tables-lesson-lattice- multiplication-3.html  http://www.thefreedictionary.com/multiplicand  http://www.thefreedictionary.com/multiplier  http://www.free-maths-dictionary.com/multiplicand  http://images.google.com/imgres?imgurl=http://www.math- smarts.com/images/Chart.jpg&imgrefurl=http://www.math- smarts.com/multiply.html&usg=__GFn- qLLLyTmqym8SEUZTErbL8aM=&h=462&w=481&sz=50&hl=en&start= 27&um=1&tbnid=Sr9A70EW1v- cuM:&tbnh=124&tbnw=129&prev=/images%3Fq%3Dmultiplication%2B chart%26ndsp%3D20%26hl%3Den%26sa%3DN%26start%3D20%26u m%3D1  http://www.coolmath4kids.com/times-tables/times-tables-lesson-lattice- multiplication-1.html