explain how you can use a grid to subtract 1.65 - 0.98
Sup
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To subtract 1.65 - 0.98 using a grid, you can create a grid with a place value system for both numbers involved.
First, draw a grid with two rows and six columns. Label the first row as "Whole Numbers" and the second row as "Decimal Places," starting from the rightmost column.
Now, we'll place the numbers in the grid. Let's start with 1.65, which has 1 in the whole numbers row and 65 in the decimal places row. Place the number 1 in the first column of the whole numbers row and the number 65 in the third column of the decimal places row.
For 0.98, place 0 in the whole numbers row, 98 in the decimal places row, but since 0.98 has only two decimal places compared to 1.65 (which has two decimal places), we need to place a zero in the first decimal places column of the grid.
Your grid should look like this:
```
Whole Numbers Decimal Places
-------------- --------------
1.65 1 65
-0.98 0 98
```
Begin the subtraction in the rightmost column (decimal places column). Subtract 98 from 65. Since 98 is greater than 65, you will need to do a regrouping or borrowing from the whole numbers column. To do this, take 1 from the whole numbers column and add it to the decimal places column, making it 65 + 100 (because you borrowed 1) = 165. Now, subtract 98 from 165, which equals 67.
Next, subtract the whole numbers column. Subtract 0 from 1, which equals 1.
Your final result is 1.65 - 0.98 = 0.67.