题目内容
根据6.386÷0.62=10.3直接填空.
6.386÷0.062=________÷0.62=103
63.86÷6.2=________
638.6÷________=10.3.
63.86 10.3 62
分析:根据商不变性质:被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;
及商的变化规律,被除数不变,除数数扩大(或缩小)几倍(0除外),则商缩小(或扩大)相同的倍数;除数不变,被除数扩大或缩小几倍(0除外),则商也随之扩大(或缩小)相同的倍数;据此解答.
解答:6.386÷0.062,
=(6.386×10)÷(0.062×10),
=63.86÷0.62,
=103;
6.386÷0.62,
=63.86÷6.2,
=10.3;
6.386÷0.62,
=(6.386×100)÷(0.62×100),
=638.6÷62,
=10.3;
故答案为:63.86,10.3,62.
点评:明确据商不变性质及商的变化规律,是解答此题的关键.
分析:根据商不变性质:被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;
及商的变化规律,被除数不变,除数数扩大(或缩小)几倍(0除外),则商缩小(或扩大)相同的倍数;除数不变,被除数扩大或缩小几倍(0除外),则商也随之扩大(或缩小)相同的倍数;据此解答.
解答:6.386÷0.062,
=(6.386×10)÷(0.062×10),
=63.86÷0.62,
=103;
6.386÷0.62,
=63.86÷6.2,
=10.3;
6.386÷0.62,
=(6.386×100)÷(0.62×100),
=638.6÷62,
=10.3;
故答案为:63.86,10.3,62.
点评:明确据商不变性质及商的变化规律,是解答此题的关键.
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