如题所述
770÷30
=(770÷10)÷(30÷10)
=77÷3
=25å3åä¹2
5600÷400
=(5600÷100)÷(400÷100)
=56÷4
=14
9800÷320
=(9800÷10)÷(320÷10)
=980÷32
=(980÷4)÷(32÷4)
=245÷8
=30å8åä¹5
=(770÷10)÷(30÷10)
=77÷3
=25å3åä¹2
5600÷400
=(5600÷100)÷(400÷100)
=56÷4
=14
9800÷320
=(9800÷10)÷(320÷10)
=980÷32
=(980÷4)÷(32÷4)
=245÷8
=30å8åä¹5
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