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description: "Practice week numbers in a live spreadsheet with ISOWEEKNUM and WEEKDAY. Flag weekends and find the Monday of any week."
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# **Week numbers and weekends practice exercises**

Number the weeks the way calendars in Europe do, tell weekends from weekdays and find the Monday that starts a date's week.

[**Start the first exercise**](https://practiceexcelonline.com/practice/week-numbers/isoweeknum-week-number)

WEEKDAY(

1. [**1****Week numbers with ISOWEEKNUM**In B2, find the ISO week number of the delivery date in A2, the week number used on calendars in Europe, with ISOWEEKNUM.](https://practiceexcelonline.com/practice/week-numbers/isoweeknum-week-number)
2. [**2****Weekend or weekday****Premium**In B2, show "Weekend" if the date in A2 falls on a Saturday or Sunday and "Weekday" if not. With WEEKDAY(A2,2), Monday is 1, so the weekend is anything over 5.](https://practiceexcelonline.com/practice/week-numbers/weekend-or-weekday)
3. [**3****The Monday that starts the week****Premium**In B2, find the Monday of the week the order date in A2 falls in. Go back as many days as WEEKDAY(A2,2) says, then forward one: A2-WEEKDAY(A2,2)+1.](https://practiceexcelonline.com/practice/week-numbers/monday-of-the-week)

## **Functions in this topic**

- [**WEEKDAY**](https://practiceexcelonline.com/functions/weekday)

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