Method 1: download the sogou input method, and enter the pinyin gou or dui, and the input method will pop up. Just select 5, as shown.

Method 2: Input with the input method soft keyboard.

1. Right-click the keyboard of the input method, as shown:

2. The pop-up menu, select mathematical symbols, as shown:

3. Open the soft keyboard of the input method, as shown:

4. Click √, as shown in figure:

Extended data:

"√" is called "checkmark", and "tick" means completely correct when reading. This symbol was not imported from abroad, but was born and raised in China, and was widely used in ancient and even modern social life. "√" is used in official, folk and ancient and modern times, and it is a symbol with high usage rate.

References:

Baidu Encyclopedia: Tick