Lessons 1-3
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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digits | The symbols 0,1,2,3,4,5,6,7,8,9 used to write numbers.
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word form | A number written in words. Example 125=one hundred twenty five.
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Expanded form | A number written as the sum of the values of its digits. Example 247=200+40+7
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fact family | A group of related facts using the same numbers.
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difference | The answer when subtracting two numbers.
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estimate | To give a number or answer that tells about how much or how many.
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round | to replace a number with another number that tells about how much or how many.
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sum | The answer when adding two or more addends.
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Associative Property of Addition | (3+2)+4=3+(2+4)
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Commutative Property of Addition | 5+3=3+5
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addends | Numbers added together to give a sum.
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Zero Property of Addition | The sum of zero and any number is that number.
3+0=3
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standard form | A number written in a way that shows only its digit. 385
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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:
woodsdale3
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