仔细观察,照样子计算.
(1)400÷25
=(400×4)÷(25×4)
=1600÷100
=16
900÷25=
3000÷125=
(2)900÷18
=(900÷9)÷(18÷9)
=100÷2
=50
350÷14=
630÷42=
仔细观察,照样子计算.
(1)400÷25
=(400×4)÷(25×4)
=1600÷100
=16
900÷25=
3000÷125=
(2)900÷18
=(900÷9)÷(18÷9)
=100÷2
=50
350÷14=
630÷42=
试题篮
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