2nd Grade worksheets that correspond to standards (click here) https://www.commoncoresheets.com/SortedByGrade.php Under the 2nd grade column, click on the standard you want your child to practice. It will provide a worksheet and answer key. This is just one of many sites you can go to to generate practice pages.
Explaining Math Thinking in Writing Odd and even click here Comparing numbers click here More will come as the year progresses