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计算下面各题.(能简便计算的可用简便方法计算)9.37+4.7+0.632.4×1.25+2.43.4×0.25+0.75×3.44.8×101-4.85.11-1.25-0.751.76-[(0.74+0.26)÷0
题目详情
计算下面各题.(能简便计算的可用简便方法计算)
9.37+4.7+0.63 | 2.4×1.25+2.4 | 3.4×0.25+0.75×3.4 |
4.8×101-4.8 | 5.11-1.25-0.75 | 1.76-[(0.74+0.26)÷0.8] |
▼优质解答
答案和解析
(1)9.37+4.7+0.63
=9.37+0.63+4.7
=10+4.7
=14.7;
(2)2.4×1.25+2.4
=3×0.8×1.25+2.4
=3×(0.8×1.25)+2.4
=3×1+2.4
=3+2.4
=5.4;
(3)3.4×0.25+0.75×3.4
=3.4×(0.25+0.75)
=3.4×1
=3.4;
(4)4.8×101-4.8
=4.8×(101-1)
=4.8×100
=480;
(5)5.11-1.25-0.75
=5.11-(1.25+0.75)
=5.11-2
=3.11;
(6)1.76-[(0.74+0.26)÷0.8]
=1.76-[1÷0.8]
=1.76-1.25
=0.51.
=9.37+0.63+4.7
=10+4.7
=14.7;
(2)2.4×1.25+2.4
=3×0.8×1.25+2.4
=3×(0.8×1.25)+2.4
=3×1+2.4
=3+2.4
=5.4;
(3)3.4×0.25+0.75×3.4
=3.4×(0.25+0.75)
=3.4×1
=3.4;
(4)4.8×101-4.8
=4.8×(101-1)
=4.8×100
=480;
(5)5.11-1.25-0.75
=5.11-(1.25+0.75)
=5.11-2
=3.11;
(6)1.76-[(0.74+0.26)÷0.8]
=1.76-[1÷0.8]
=1.76-1.25
=0.51.
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