题目内容
脱式计算.
0.5×4÷0.5×4 | (7.5-2.3×0.4)÷0.01 | 2.16÷0.9÷0.3 | 2.6×(0.175÷0.25) |
分析:(1)按照运算顺序,从左到右依次计算即可;
(2)先算小括号里面的乘法,再算小括号里面的减法,最后算小括号外面的除法;
(3)按照运算顺序,从左到右依次计算即可;
(4)先算小括号里面的除法,再算小括号外面的乘法.
(2)先算小括号里面的乘法,再算小括号里面的减法,最后算小括号外面的除法;
(3)按照运算顺序,从左到右依次计算即可;
(4)先算小括号里面的除法,再算小括号外面的乘法.
解答:解:(1)0.5×4÷0.5×4,
=2÷0.5×4,
=4×4,
=16;
(2)(7.5-2.3×0.4)÷0.01,
=(7.5-0.92)÷0.01,
=6.58÷0.01,
=658;
(3)2.16÷0.9÷0.3,
=2.4÷0.3,
=8;
(4)2.6×(0.175÷0.25),
=2.6×0.7,
=1.82.
=2÷0.5×4,
=4×4,
=16;
(2)(7.5-2.3×0.4)÷0.01,
=(7.5-0.92)÷0.01,
=6.58÷0.01,
=658;
(3)2.16÷0.9÷0.3,
=2.4÷0.3,
=8;
(4)2.6×(0.175÷0.25),
=2.6×0.7,
=1.82.
点评:四则运算,先弄清运算顺序,然后再进一步计算,能简算的要简算.
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