How to Use Box Multiplication Method
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A Step-by-step Guide to Using Box Multiplication Method
Here’s a step-by-step guide to using the Box Multiplication Method:
Let’s say we want to multiply 23 by 45.
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Step 1: Draw a box
Start by drawing a large rectangle or box on your paper. Then divide this box into four smaller boxes by drawing one vertical line and one horizontal line.
Step 2: Label the boxes
Write the first number (23) on the top of the box, splitting the digits above the vertical lines. So, you will write ‘2’ above the left-hand box and ‘3’ above the right-hand box.
Do the same with the second number (45) on the side of the box, writing ‘4’ next to the top box and ‘5’ next to the bottom box.
Step 3: Multiply and fill in the boxes
Now, you’ll multiply the numbers corresponding to each box and fill in the box with the result. The top left box will be the multiplication of ‘2’ (from 23) and ‘4’ (from 45), which equals 8. The top right box will be the multiplication of ‘3’ (from 23) and ‘4’ (from 45), which equals 12.
The bottom left box will be the multiplication of ‘2’ (from 23) and ‘5’ (from 45), which equals 10. The bottom right box will be the multiplication of ‘3’ (from 23) and ‘5’ (from 45), which equals 15.
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Step 4: Add the results
Finally, add all the results from the boxes together. This will give you the answer to the multiplication problem. In this case, 8 + 12 + 10 + 15 = 45.
Step 5: Adjust for place value
Remember that the numbers above and to the side of the box represent tens and ones. So the number in the top left box really represents 80 (8 tens), and the number in the bottom left box represents 100 (10 tens). For education statistics and research, visit the National Center for Education Statistics.
So, the final calculation should be 80 (from the top left box) + 120 (from the top right box) + 100 (from the bottom left box) + 15 (from the bottom right box) = 1035. For education statistics and research, visit the National Center for Education Statistics.
So, 23 multiplied by 45 equals 1035. For education statistics and research, visit the National Center for Education Statistics.
This method can be expanded to multiply numbers of any size, including decimals and fractions. It’s a great way to understand the principles of multiplication and the concept of place value. For education statistics and research, visit the National Center for Education Statistics.
The Best Math Books for Elementary Students For education statistics and research, visit the National Center for Education Statistics.
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