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用简便方法计算．2.375+667+(558−567)537+634+447+5140.72+338+1.28+65817725−(623+2715)−113．
题目详情
用简便方法计算．
2.375+6
+(5
−5
)
5
+6
+4
+5
0.72+3
+1.28+6
17
−(6
+2
)−1
．
+(5
−5
)
5
+6
+4
+5
0.72+3
+1.28+6
17
−(6
+2
)−1
．
6 6 7 7
5 5 8 8
6 6 7 7
5
+6
+4
+5
0.72+3
+1.28+6
17
−(6
+2
)−1
．
3 3 7 7
3 3 4 4
4 4 7 7
1 1 4 4
0.72+3
+1.28+6
17
−(6
+2
)−1
．
3 3 8 8
5 5 8 8
17
−(6
+2
)−1
．
7 7 25 25
2 2 3 3
7 7 15 15
1 1 3 3
2.375+6
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5
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0.72+3
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17
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5
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0.72+3
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17
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5
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| 1 |
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0.72+3
| 3 |
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17
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0.72+3
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17
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17
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▼优质解答
答案和解析
（1）2.375+667+(558−567)=2.375+667+558-567=（2.375+558）+（667-567）=8+1=9；（2）537+634+447+514=537+447+634+514=（537+447）+（634+514）=10+12=22；（3）0.72+338+1.28+658=0.72+1.28+338+658=（0.72+1.28...
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