题目内容
简便计算.
810÷15÷6=
20-8.12-1.88=
27.54-(17.54-3.6)=
810÷15÷6=
20-8.12-1.88=
27.54-(17.54-3.6)=
分析:(1)根据除法的性质进行解答,
(2)根据减法的性质进行解答.
(3)根据减法的性质进行解答.据此解答.
(2)根据减法的性质进行解答.
(3)根据减法的性质进行解答.据此解答.
解答:解:(1)810÷15÷6,
=810÷(15×6),
=810÷90,
=9;
(2)20-8.12-1.88,
=20-(8.12+1.88),
=20-10,
=10;
(3)27.54-(17.54-3.6),
=27.54-17.54+3.6,
=10+3.6,
=13.6.
=810÷(15×6),
=810÷90,
=9;
(2)20-8.12-1.88,
=20-(8.12+1.88),
=20-10,
=10;
(3)27.54-(17.54-3.6),
=27.54-17.54+3.6,
=10+3.6,
=13.6.
点评:本题主要考查了学生在四则运算中灵活运用简便算法的能力.注意要细心.
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