【思路点拨】 由题意可得:买了4个篮球,每个篮球80元,可根据 价格问题公式求出购买篮球的总价格即为$$ 4 \times 8 0 $$,用 钱数减去买篮球购买的钱数即为买足球的钱数,买了8个足球,根据价格问题公式,可推导出 $$ 单价 = 总价 \div 数 $$即可求出每个足球的单价。 【知识点总结】 $$ 总价 = ...
= 4 0 3 \times 6 \\ = 2 4 1 8 $$ 故答案为:2418【找一个数的因数的方法】1、分解质因数.例如:24的质因数有:2、2、2、3,那么24的因数就有:1、2、3、4、6、8、12、24.2、找配对.例如:24=1×24、2×12、3×8、4×6,那么,24的因数就有:1、24、2、12、3、8、4、6.【点拨】1. ...
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27解析 $$ 7 2 0 = 2 ^ { 4 } \times 3 ^ { 2 } \times 5 = 8 \times 9 \times 1 0 $$,这三个数是8、 9、10,所以和为:$$ 8 + 9 + 1 0 = 2 7 $$. 结果一 题目 三个连续自然数的乘积是720,求这三个数的和是多少? 答案 解:先把720分解质因数,把720写成3个连续自然数的...
【解析】 720 $$ = 2 \times 2 \times 2 \times 2 \times 3 \times 3 \times 5 \\ = ( 2 \times 2 \times 2 ) \times ( 3 \times 3 ) \times ( 2 \times 5 ) \\ = 8 \times 9 \times 1 0 \\ 1 0 > 9 > 8 $$ 故答案为:10.【整除】 1.整数a除以整数b(b≠0),除得...
Image Zoom 3 times(1.0X, 1.5X, 2.0X) Image Flip 180° flip Image/Video Image/Video Resolution 1280*720 Signal Format Digital Image Format .JPG Video Format .AVI Internal Memory Micro SD Card( support Max.32G) Power Supply Working Voltage 5V Working Current 460mA Li-...
2. 960分辨率：具体的分辨率数值需要更多上下文来确定，因为不同设备和应用场景可能有不同的分辨率标准。3. 1080分辨率：表示为1080P，其分辨率为1920×1080像素。这是全高清视频的常见分辨率。4. 2m分辨率：通常指的是视频的码流大小，具体像素值取决于视频压缩格式和编码设置。但在监控领域，它可能...
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