HSP Chapter 2
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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estimate | a number close to an exact amount
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compatible numbers | numbers that are easy to compute mentally
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fact family | a set of related multiplication and division, or addition and subtraction equations
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inverse operations | operations that undo each other Addition and subtraction are inverse operations.
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round | to replace a number with another number that tells about how many or how much
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front-end estimation | a method of estimating a sum or difference by using the front digit of the number and substituting zeros for the other digits
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regroup | to exchange amounts of equal value to rename a number
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sum | the answer to an addition problem
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difference | the answer to a subtraction problem
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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.
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.
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:
mrsodenbach
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