38×7+62×7用简便方法计算

Question

38×7+62×7用简便方法计算

Answer 1

38×7+62×7

=（38+62）x7
=100x7
=700

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Answer 2

38×7+62×7
=（38+62）×7
=100×7
=700

Answer 3

62×7+38×7
＝（38+62）×7
＝100×7
＝700

Answer 4

62×7+38×7＝（38+62）×7＝100×7＝700

Answer 5

滚
简单的题都不会