Yes, you can print multiple worksheets double-sided in Excel. Here are the steps to do so:

1. Open the Excel workbook that contains the worksheets you want to print double-sided.
2. Select all the worksheets you want to print by clicking on the first worksheet tab, holding down the Shift key, and clicking on the last worksheet tab. Alternatively, you can select multiple non-contiguous worksheets by holding down the Ctrl key and clicking on each worksheet tab.
3. Click on the Page Layout tab in the ribbon at the top of the Excel window.
4. Click on the small arrow in the bottom right corner of the Page Setup group to open the Page Setup dialog box.
5. Click on the Margins tab in the Page Setup dialog box.
6. Under the Multiple pages dropdown menu, select 2 pages per sheet.
7. Under the Margins dropdown menu, select Custom Margins.
8. In the Page Setup dialog box, set the Top, Bottom, Left, and Right margins to the desired values for your printer.
9. Click on the Sheet tab in the Page Setup dialog box.
10. Under the Print titles section, click on the Rows to repeat at top box and select the row(s) you want to repeat at the top of each printed page.
11. Under the Print titles section, click on the Columns to repeat at left box and select the column(s) you want to repeat at the left of each printed page.
12. Click OK to close the Page Setup dialog box.
13. Click on the File tab in the ribbon at the top of the Excel window.
14. Click on Print.
15. In the Print dialog box, under Settings, select the printer you want to use.
16. Under Settings, select the double-sided printing option for your printer.
17. Under Settings, select the number of copies you want to print.
18. Click on the Print button to start printing.

Regarding the page numbering issue, Excel does not have a built-in feature to automatically number pages across multiple worksheets. However, you can manually add page numbers to each worksheet by inserting a footer and typing the page number in the desired format (e.g. "Page 1 of 10") in the center or right section of the footer. To do this:

1. Click on the Insert tab in the ribbon at the top of the Excel window.
2. Click on the Header & Footer button in the Text group.
3. Click on the Footer button and select the desired footer format (e.g. Blank, Simple, or Built-in).
4. In the center or right section of the footer, type the desired page number format (e.g. "Page &P of &N").
5. Click on the Close Header and Footer button to close the footer.
6. Repeat steps 1-5 for each worksheet in the workbook.
7. When you print the worksheets, the page numbers will be included in the footer of each printed page.