Adding and Subtracting Decimals
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| To add decimal numbers first put the numbers in a vertical column,aligning the decimal points. | Then add each column of digits, starting on the right and working left. If the sum of the column is more than 10,"carry" digits to the next column on the left. Place the decimal point in the answer directly below the decimal points in the terms.
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| Add 234.5678 to 1.2345 | 324.5678 1.2345----------325.9023
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| To subtract decimal numbers, first put the numbers in the veritical column, aligning the decimal points. | Then sub each col,starting on right &working left. If the digit being sub in a col is larger than the digit above,it "borrow" a digit from the next col to the left. Place the decimal point in the answer directly below the decimal points in the terms.
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| Subtract 1.203 from 32.255 | 32.255 1.203-------31.052
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
izeno
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