Work out \( 21 \div 3 \)

To solve \( 21 \div 3 \), you simply need to find how many times 3 fits into 21. When you divide, you'll get \( 7 \) because \( 3 \times 7 = 21 \). So, the answer is \( 7 \)! But did you know that division is essentially the opposite of multiplication? That's why checking your work by multiplying the answer back (7 × 3) can be a fun way to confirm you've got it right! Keep practicing, and you'll become a division master in no time!