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计算.55×66÷(11×11)3.5×[6.8-(1.6+3.6÷0.9)]÷8418÷311-0.3×0.7.

题目详情
计算.
55×66÷(11×11)
3.5×[6.8-(1.6+3.6÷0.9)]÷84
18÷
3
11
-0.3×0.7.
▼优质解答
答案和解析
(1)55×66÷(11×11)
=55×66÷11÷11
=(55÷11)×(66÷11)
=5×6
=30;

(2)3.5×[6.8-(1.6+3.6÷0.9)]÷84
=3.5×[6.8-(1.6+4)]÷84
=3.5×[6.8-5.6]÷84
=3.5×1.2÷84
=4.2÷84
=0.05;

(3)18÷
3
11
-0.3×0.7
=66-0.21
=65.79.