(16+19-112)×4×92.5×(1.9+1.9+1.9+1.9)3.64÷4+4.36×25%200512003×20032004(927+729)÷(57+59)12+34+78+1516+3132+6364+12712813+34+25+57+78+920+1021+1124+193514285-数学 打印页面 - 零零教育信息网
(16+19-112)×4×92.5×(1.9+1.9+1.9+1.9)3.64÷4+4.36×25%200512003×20032004(927+729)÷(57+59)12+34+78+1516+3132+6364+12712813+34+25+57+78+920+1021+1124+193514285-数学 |
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[db:作者] 2019-03-19 00:00:00 互联网 |
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题文
(+-)×4×9 |
2.5×(1.9+1.9+1.9+1.9) |
3.64÷4+4.36×25% |
2005× |
(9+7)÷(+) |
++++++ |
++++++++ |
142857÷117+285714÷117+571428÷117. | |
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题型:解答题 难度:中档
答案
(1)(+-)×4×9 =(+-)×36, =×36+×36+×36, =6+4+3, =13;
(2)2.5×(1.9+1.9+1.9+1.9) =2.5×4×1.9, =10×1.9, =19;
(3)3.64÷4+4.36×25% =3.64×25%+4.36×25%, =(3.64+4.36)×25%, =8×25%, =2;
(4)2005× =(2004+1)×, =2004×+×, =2003+1, =2004;
(5)(9+7)÷(+) =16÷, =13;
(6)++++++ =(1-)+(1-)+…+(1-), =1+1+1+1+1+1+1-(++…+), =7-, =7-, =6;
(7)++++++++ =(++++)+(++)+(++), =++, =++, =5;
(8)142857÷117+285714÷117+571428÷117. =142857×+285714×+571428×, =(142857+285714+571428)×, =999999×, =8547. |
据专家权威分析,试题“(16+19-112)×4×92.5×(1.9+1.9+1.9+1.9)3.64÷4+4.36×25%20..”主要考查你对 运算定律和简便算法,整数,小数,分数,百分数和比例的混合计算 等考点的理解。关于这些考点的“档案”如下:
运算定律和简便算法整数,小数,分数,百分数和比例的混合计算
考点名称:运算定律和简便算法
考点名称:整数,小数,分数,百分数和比例的混合计算
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