能用简便方法计算的要用简便方法计算.
0.8×(12.5+1.25) 2.5+7.5×(8.65-2.25)
2.5×0.4÷2.5×0.4 2.5×2.8×2
24.59-1.05+4.41-6.95.
能用简便方法计算的要用简便方法计算. 0.8×(12.5+1.25) 2.5+7.5×(8.65-2.25) 2.5×0.4÷2
答案:2 悬赏:50
解决时间 2021-12-21 21:00
- 提问者网友:相思故
- 2021-12-21 16:41
最佳答案
- 二级知识专家网友:滚出爷的世界
- 2021-12-21 16:52
①0.8×(12.5+1.25)
=0.8×12.5+0.8×1.25
=10×1
=10;
②2.5+7.5×(8.65-2.25)
=2.5+7.5×6.4
=2.5+48
=50.5;
③2.5×0.4÷2.5×0.4
=2.5÷2.5×0.4×0.4
=1×0.4×0.4
=0.16;
④2.5×2.8×2
=2.8×(2.5×2)
=2.8×5
=14;
⑤24.59-1.05+4.41-6.95
=24.59+4.41-(1.05+6.95)
=29-8
=21.
=0.8×12.5+0.8×1.25
=10×1
=10;
②2.5+7.5×(8.65-2.25)
=2.5+7.5×6.4
=2.5+48
=50.5;
③2.5×0.4÷2.5×0.4
=2.5÷2.5×0.4×0.4
=1×0.4×0.4
=0.16;
④2.5×2.8×2
=2.8×(2.5×2)
=2.8×5
=14;
⑤24.59-1.05+4.41-6.95
=24.59+4.41-(1.05+6.95)
=29-8
=21.
全部回答
- 1楼网友:何必打扰
- 2021-12-21 17:53
搜一下:能用简便方法计算的要用简便方法计算. 0.8×(12.5+1.25) 2.5+7.5×(8.65-2.25) 2.5×0.4÷2
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