How do i contact square support by phone? To contact Square Support by phone, follow these steps: Sign In to your Square account. Click Contact Us and select the topic that matches your inquiry. If you have an issue that isn’t listed, click Other.What should i do if someone calls me from an unknown number? If someone from an unknown phone number called you, you can either call him back or check his phone number in our database, where other users share their opinions about their and other telephone numbers with others.What are numbernumber squares? Number squares are not all from 1-100, for example, a number square from 1-20 may be used to help younger children count in 2s during KS1: Colouring in the multiples of 2 in a number grid can help children notice a pattern, like the diagonal pattern in the grid opposite. This makes the process of learning to count more memorable and enjoyable.How do you find the squared value of a number? Find the squared value of a number n. Enter positive or negative whole numbers or decimal numbers or scientific E notation. When you want to square negative numbers in this calculator use parentheses with your input. For example, to square -4 enter it into the calculator as (-4) with parentheses.