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计算下面各题,能简便计算的用简便方法计算.7.4×9.8-14.513.4+5.62+17.6+4.386.73×4.8+5.2×6.738.4÷0.6+8.4÷0.4(9.6+1.48÷3.7)÷85.8÷[4×(1.34-0.14)].

题目详情
计算下面各题,能简便计算的用简便方法计算.
7.4×9.8-14.5                  
13.4+5.62+17.6+4.38 6.73×4.8+5.2×6.73            
8.4÷0.6+8.4÷0.4 (9.6+1.48÷3.7)÷8             5.8÷[4×(1.34-0.14)].
计算下面各题,能简便计算的用简便方法计算.
7.4×9.8-14.5                  
13.4+5.62+17.6+4.38 6.73×4.8+5.2×6.73            
8.4÷0.6+8.4÷0.4 (9.6+1.48÷3.7)÷8             5.8÷[4×(1.34-0.14)].
计算下面各题,能简便计算的用简便方法计算.
7.4×9.8-14.5                   13.4+5.62+17.6+4.38 6.73×4.8+5.2×6.73            计算下面各题,能简便计算的用简便方法计算.
7.4×9.8-14.5                  
13.4+5.62+17.6+4.386.73×4.8+5.2×6.73             8.4÷0.6+8.4÷0.4 (9.6+1.48÷3.7)÷8             5.8÷[4×(1.34-0.14)].8.4÷0.6+8.4÷0.4(9.6+1.48÷3.7)÷8            5.8÷[4×(1.34-0.14)].
▼优质解答
答案和解析
7.4×9.8-14.5,
=7.4×(10-0.2)-14.5,
=7.4×10-7.4×0.2-14.5,
=74-1.48-14.5,
=58.02;
13.4+5.62+17.6+4.38,
=(13.4+17.6)+(5.62+4.38),
=31+10,
=41;
6.73×4.8+5.2×6.73,
=6.73×(4.8+5.2),
=6.73×10,
=67.3;
8.4÷0.6+8.4÷0.4,
=84÷6+84÷4
=14+21
=35;
(9.6+1.48÷3.7)÷8,
=9.6÷8+1.48÷3.7÷8,
=1.2+0.05,
=1.25;
7.4×9.8-14.5,
=7.4×(10-0.2)-14.5,
=7.4×10-7.4×0.2-14.5,
=74-1.48-14.5,
=58.02;
13.4+5.62+17.6+4.38,
=(13.4+17.6)+(5.62+4.38),
=31+10,
=41;
6.73×4.8+5.2×6.73,
=6.73×(4.8+5.2),
=6.73×10,
=67.3;
8.4÷0.6+8.4÷0.4,
=84÷6+84÷4
=14+21
=35;
(9.6+1.48÷3.7)÷8,
=9.6÷8+1.48÷3.7÷8,
=1.2+0.05,
=1.25; 7.4×9.8-14.5,
=7.4×(10-0.2)-14.5,
=7.4×10-7.4×0.2-14.5,
=74-1.48-14.5,
=58.02;
13.4+5.62+17.6+4.38,
=(13.4+17.6)+(5.62+4.38),
=31+10,
=41;
6.73×4.8+5.2×6.73,
=6.73×(4.8+5.2),
=6.73×10,
=67.3;
8.4÷0.6+8.4÷0.4,
=84÷6+84÷4
=14+21
=35;
(9.6+1.48÷3.7)÷8,
=9.6÷8+1.48÷3.7÷8,
=1.2+0.05,
=1.25;7.4×9.8-14.5,
=7.4×(10-0.2)-14.5,
=7.4×10-7.4×0.2-14.5,
=74-1.48-14.5,
=58.02;
13.4+5.62+17.6+4.38,
=(13.4+17.6)+(5.62+4.38),
=31+10,
=41;
6.73×4.8+5.2×6.73,
=6.73×(4.8+5.2),
=6.73×10,
=67.3;
8.4÷0.6+8.4÷0.4,
=84÷6+84÷4
=14+21
=35;
(9.6+1.48÷3.7)÷8,
=9.6÷8+1.48÷3.7÷8,
=1.2+0.05,
=1.25; 5.8÷[4×(1.34-0.14)],
=5.8÷(4×1.2),
=5.8÷4.8,
=1.2.