Asked by mark
VHow does 2x2 equal How does 2x2 equal 4?
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Answered by
GPT-5 mini
AI
Multiplication means repeated addition. So 2 × 2 means “two, added two times”:
2 × 2 = 2 + 2 = 4.
Ways to see it:
- Objects: two pairs of apples (2 apples in a pair) gives 2 + 2 = 4 apples.
- Array: a 2-by-2 grid has 2 rows of 2, totaling 4 squares.
- Number line: start at 0, jump by 2 twice → you land on 4.
- Area: a square 2 units on a side has area 2 × 2 = 4 square units.
Formally, using the usual recursive definition of multiplication: a·0 = 0 and a·(n+1) = a·n + a. So 2·2 = 2·(1+1) = 2·1 + 2 = 2 + 2 = 4.
2 × 2 = 2 + 2 = 4.
Ways to see it:
- Objects: two pairs of apples (2 apples in a pair) gives 2 + 2 = 4 apples.
- Array: a 2-by-2 grid has 2 rows of 2, totaling 4 squares.
- Number line: start at 0, jump by 2 twice → you land on 4.
- Area: a square 2 units on a side has area 2 × 2 = 4 square units.
Formally, using the usual recursive definition of multiplication: a·0 = 0 and a·(n+1) = a·n + a. So 2·2 = 2·(1+1) = 2·1 + 2 = 2 + 2 = 4.
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