2*2

Задача: 2 × 2

Solution (adapted for English, grade 10, with step-by-step explanations)

1. Understand the operation

• The expression 2 × 2 means "two times two." In multiplication, we can think of it as adding 2 to itself 2 times.

2. Use repeated addition

• 2 × 2 = 2 + 2

3. Perform the addition

• 2 + 2 = 4

4. State the result

• Therefore, 2 × 2 = 4.

5. Quick checks and alternative representations

• Doubling check: Doubling 2 gives 4, which matches the result.
• Array representation: Two rows by two columns (a 2×2 grid) also contains 4 units.
• Property note: Multiplication is commutative, but here it’s the same either way: 2 × 2 = 2 × 2 = 4.

Answer: 4