2.3小题简便运算怎么做?
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2.3小题简便运算怎么做?
2.3小题简便运算怎么做?
2.3小题简便运算怎么做?
2
=39x(49+1)
=39x50
=1950
3
=8x125x34
=1000x34
=34000
2.3小题简便运算怎么做?
2.3小题简便运算怎么做?
2.3小题简便运算怎么做?
2
=39x(49+1)
=39x50
=1950
3
=8x125x34
=1000x34
=34000