3rd grade ch. 3 properties of subtraction
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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A way to express a math idea using numbers and operational symbols | Number Sentence
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A number close to an exact value | Estimate
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The answer in a subtraction problem | Difference
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To take apart a number to write it in a new way | Regroup
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Uses the front digit of a number and replaaces the other digits with zeros | Front-end Estimation
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An operation that tells the difference, when some or all are taken away. | Subtraction
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When you are completing a subtraction problem, the answer is known as the ________________. | Difference
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15 ones = 1 ten 5 ones. This is the correct way to __________. | Regroup
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427-106 is about 300. This is an example of ____________. | Estimation
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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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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:
Mrs. Hise
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