Question

用简便计算 4.7x5.3+5.3x5.3

Answer 1

4.7×5.3+5.3×5.3
=5.3×（4.7+5.3）
=5.3×10
=53

Answer 2

5.3X（5.3+4.7）=53

追答

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Answer 3

 

Answer 4

53

追答

5.3×（5.3+4.7）=5.3×10=53