Math 6 Chapter 3 Vocabulary
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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| decimal | Numbers that have digits in the tenths place and beyond.
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| standard form | The usual way to write a number. Example: 321
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| Expanded form | The sum of the products of each digit and its place value. Example: (3 x 100) + (2 x 10) + (1 x ) = 321
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| inequality | A mathematical sentence indicating that two quantities are not equal. The symbols < and > are used in the mathematical sentence.
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| equivalent decimals | Decimals that name the same number but may look different. Example: 0.8 = 0.80
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| the traditional way to round decimals | Underline the digit you are rounding to, look to the right. If the number to the right is greater than 5, add 1 to the underlined digit. If it is not, leave the underlined digit alone. Drop all digits after the rounded digit.
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| clustering | A way to round decimals to estimate sums of a lot of addends. If all of the addends are close to the same number, make all of the addends the same number.
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| front-end estimation | A way to round decimals for estimating sums or differences. Use only the numbers in the first or first and second place value. Example 192 + 373 = 100 + 300.
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| Adding and subtracting decimals | Estimate solution before lining up the decimals to keep the place values in columns.
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| Multiplying decimals | Estimate solution using a similar whole number math fact. Do not line up the decimals before computing. Count the number of decimal places to find out how many decimals is in your solution. Compare result to estimate.
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| Dividing decimals | Estimate solution using a similar whole number math fact. Move your decimals an equal number of places in the divisor and dividend until the divisor is a whole number. Compare your quotient with your estimate.
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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:
MathSamurai678
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