Question

39+13×97的简便算法？

Answer 1

简便算法

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=13*3+13*97

=13*（3+97）=1300

Answer 2

39+13x97=3x13+13′x97=13ⅹ(3+97)=13x100=1300

Answer 3

39+13×97
=13x3+13×97
=13x(3+97)
=13x100
=1300

Answer 4

39+13×97
=13×3+13×97
=13×（3+97）
=13×100
=1300

Answer 5

39+13×97
=13x3+13×97
=13x(3+97)
=13x100
=130