题目内容
7.6÷0.42=
76
76
÷4.2=7600÷420
420
.分析:商不变性质:在除法里,被除数和除数同时扩大或缩小相同的倍数(0除外),商不变;据此解答.
解答:解:7.6÷0.42,
=(7.6×10)÷(0.42×10),
=76÷4.2;
7.6÷0.42,
=(7.6×1000)÷(0.42×1000),
=7600÷420;
故答案为:76,420.
=(7.6×10)÷(0.42×10),
=76÷4.2;
7.6÷0.42,
=(7.6×1000)÷(0.42×1000),
=7600÷420;
故答案为:76,420.
点评:解答此题应明确:只有被除数和除数同时扩大或缩小相同的倍数(0除外),商才不变.
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