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我用我喜欢的方法计算.15.73-(6.25+3.73)70.9-1.25-1.752.54+9.16+9.46-9.161.39+0.72+0.61+3.2817.8-3.7-6.38.28-(1.28+3.7)
题目详情
我用我喜欢的方法计算.
15.73-(6.25+3.73)
70.9-1.25-1.75
2.54+9.16+9.46-9.16
1.39+0.72+0.61+3.28
17.8-3.7-6.3
8.28-(1.28+3.7)
15.73-(6.25+3.73)
70.9-1.25-1.75
2.54+9.16+9.46-9.16
1.39+0.72+0.61+3.28
17.8-3.7-6.3
8.28-(1.28+3.7)
▼优质解答
答案和解析
(1)15.73-(6.25+3.73)
=15.73-3.73-6.25
=12-6.25
=5.75;
(2)70.9-1.25-1.75
=70.9-(1.25+1.75)
=70.9-3
=67.9;
(3)2.54+9.16+9.46-9.16
=(2.54+9.46)+(9.16-9.16)
=12+0
=12;
(4)1.39+0.72+0.61+3.28
=(1.39+0.61)+(0.72+3.28)
=2+4
=6;
(5)17.8-3.7-6.3
=17.8-(3.7+6.3)
=17.8-10
=7.8;
(6)8.28-(1.28+3.7)
=8.28-1.28-3.7
=7-3.7
=3.3.
=15.73-3.73-6.25
=12-6.25
=5.75;
(2)70.9-1.25-1.75
=70.9-(1.25+1.75)
=70.9-3
=67.9;
(3)2.54+9.16+9.46-9.16
=(2.54+9.46)+(9.16-9.16)
=12+0
=12;
(4)1.39+0.72+0.61+3.28
=(1.39+0.61)+(0.72+3.28)
=2+4
=6;
(5)17.8-3.7-6.3
=17.8-(3.7+6.3)
=17.8-10
=7.8;
(6)8.28-(1.28+3.7)
=8.28-1.28-3.7
=7-3.7
=3.3.
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