用你喜欢的方法算: [5/28]×22 | 4.6÷4+7.4×[1/4] | ||||||||
95.6×1.8+95.6×8.2 | 3.9+4[5/6]+6.1+5[1/6] | ||||||||
0.15÷0.25+([1/4]+[1/3]) | ([1/2]+[1/3]+[1/4])×0.24 | ||||||||
3.5×2.7-52.2÷18 | 18 [4/15]-5.26-4.74 | ||||||||
(2 [2/3]+1[1/4])÷(6-5[1/6]) | (25+[1/4])×4 | ||||||||
[3/4]+1[2/5]+[1/4]+2[3/5] | 9
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想听ee一夜 幼苗
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(1)[5/28]×22,
=[55/14];
(2)4.6÷4+7.4×[1/4],
=4.6×[1/4]+7.4×[1/4],
=(4.6+7.4)×[1/4],
=12×[1/4],
=3;
(3)95.6×1.8+95.6×8.2,
=95.6×(1.8+8.2),
=95.6×10,
=956;
(4)3.9+4[5/6]+6.1+5[1/6],
=(3.9+6.1)+(4[5/6]+5[1/6]),
=10+10,
=20;
(5)0.15÷0.25+([1/4]+[1/3])
=[3/5]+[7/12],
=[71/60];
(6)([1/2]+[1/3]+[1/4])×0.24
=[1/2]×0.24+[1/3]×0.24+[1/4]×0.24,
=0.12+0.08+0.06,
=0.26;
(7)3.5×2.7-52.2÷18,
=9.45-2.9,
=6.55;
(8)18 [4/15]-5.26-4.74,
=18[4/15]-(5.26+4.74),
=18[4/15]-10,
=8[4/15];
(9)(2 [2/3]+1[1/4])÷(6-5
1
点评:
本题考点: 分数的四则混合运算;运算定律与简便运算;分数乘法;小数四则混合运算;整数、分数、小数、百分数四则混合运算.
考点点评: 完成本题要细心,注意小数、分数之间的互化以及通分约分.
1年前
用自己喜欢的方法计算.5400-2940÷28×27 (20
1年前1个回答
1年前1个回答