Today we reviewed last night's homework on decimal expanded form. We then talked about how to compare decimals.
We talked about two strategies. One is to add zeros to the RIGHT END of the number so that each decimal has the same number of digits after the decimal. For example, when comparing 0.550 and 0.09, you would add one zero to the right of the 9 so that the decimal became 0.090. This strategy allows students to be able to use their previous understanding of comparing whole numbers. 550 is larger than 90, so 0.550 > 0.09. The second strategy is to compare numbers by place starting from the left (the larger places). In this strategy, students compare wholes, then tenths, then hundredths and so on until they find a place with two different digits. The number with the higher digit is then larger. For example: in using the numbers above the ones place has a 0 for both numbers, so then students would move on to the tenths place. One number has a 5 and one has a 0. The number with the 5 is larger. So 0.550 > 0.09. HOMEWORK TONIGHT: IXL G10 to 80%
0 Comments
Leave a Reply. |
Archives
April 2020
|