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脱式计算.8.5×5.67-7.5×5.67;3.6÷(0.2+0.3);4.5-1.14÷1.5-1.24;6.2+3.5×25×4.
题目详情
脱式计算.
8.5×5.67-7.5×5.67; 3.6÷(0.2+0.3);
4.5-1.14÷1.5-1.24; 6.2+3.5×25×4.
8.5×5.67-7.5×5.67; 3.6÷(0.2+0.3);
4.5-1.14÷1.5-1.24; 6.2+3.5×25×4.
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答案和解析
(1)8.5×5.67-7.5×5.67
=(8.5-7.5)×5.67
=1×5.67
=5.67;
(2)3.6÷(0.2+0.3)
=3.6÷0.5
=7.2;
(3)4.5-1.14÷1.5-1.24
=4.5-0.76-1.24
=4.5-(0.76+1.24)
=4.5-2
=2.5;
(4)6.2+3.5×25×4
=6.2+3.5×(25×4)
=6.2+3.5×100
=6.2+350
=356.2.
=(8.5-7.5)×5.67
=1×5.67
=5.67;
(2)3.6÷(0.2+0.3)
=3.6÷0.5
=7.2;
(3)4.5-1.14÷1.5-1.24
=4.5-0.76-1.24
=4.5-(0.76+1.24)
=4.5-2
=2.5;
(4)6.2+3.5×25×4
=6.2+3.5×(25×4)
=6.2+3.5×100
=6.2+350
=356.2.
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