Mathematical Symbols

Operations

×÷²³

Equality, inequality, approximation

Geometry

Statistics and Probability

|μσ

Dice

🎲

Playing cards

Suits

Individual cards

Suit A 2 3 4 5 6 7 8 9 10 J Q K
♥ Hearts 🂱 🂲 🂳 🂴 🂵 🂶 🂷 🂸 🂹 🂺 🂻 🂽 🂾
♦ Diamonds 🃁 🃂 🃃 🃄 🃅 🃆 🃇 🃈 🃉 🃊 🃋 🃍 🃎
♣ Clubs 🂡 🂢 🂣 🂤 🂥 🂦 🂧 🂨 🂩 🂪 🂫 🂭 🂮
♠ Spades 🃑 🃒 🃓 🃔 🃕 🃖 🃗 🃘 🃙 🃚 🃛 🃝 🃞

Reference: Wikipedia

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Unicode has extended the characters in fonts to include mathematical symbols.
Simply highlight, copy and paste* into Word, your favourite text editor, text message or web page comment.

Be careful, not all symbols will work on all devices.

*On Windows: ctrl+c, ctrl+v
On Mac: +c, +v