(a+b)²Special products: math practice, grade 7

Practise “Special products” online for free. Five right answers in a row make the tasks harder, two mistakes in a row make them easier. Right answers earn coins for games.

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Example problems

These are only examples: the practice makes new tasks every time.

1. 41² = ?

   Answer

   1681

2. 59² = ?

   Answer

   3481

3. 81 × 79 = ?

   Answer

   6399

4. 62 × 58 = ?

   Answer

   3596

5. 82² − 77² = ?

   Answer

   795

6. (x + 4)² = ?

   Answer

   x² + 8x + 16

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