简便计算76.3×27-76.3×17 (8×5.27)×1.25 1.25×0.256×2.5 3.8×1...
答案:1 悬赏:70 手机版
解决时间 2021-02-12 06:14
- 提问者网友:鼻尖触碰
- 2021-02-11 06:20
简便计算76.3×27-76.3×17 (8×5.27)×1.25 1.25×0.256×2.5 3.8×1...
最佳答案
- 五星知识达人网友:鱼忧
- 2021-02-11 07:16
①76.3×27-76.3×17
=76.3×(27-17),
=76.3×10
=763;
②(8×5.27)×1.25
=(8×1.25)×5.27
=10×5.27
=52.7;
③1.25×0.256×2.5
=(1.25×0.8)×(0.4×2.5)×0.8
=1×1×0.8
=0.8;
④3.8×10.1
=3.8×10+3.8×0.1
=38+0.38
=38.38;
⑤4.283-1.634+4.717-2.266
=(4.283+4.717)-(1.634+2.266)
=9-3.9
=5.1;
⑥4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423.
=76.3×(27-17),
=76.3×10
=763;
②(8×5.27)×1.25
=(8×1.25)×5.27
=10×5.27
=52.7;
③1.25×0.256×2.5
=(1.25×0.8)×(0.4×2.5)×0.8
=1×1×0.8
=0.8;
④3.8×10.1
=3.8×10+3.8×0.1
=38+0.38
=38.38;
⑤4.283-1.634+4.717-2.266
=(4.283+4.717)-(1.634+2.266)
=9-3.9
=5.1;
⑥4.23×101-4.23
=4.23×(101-1)
=4.23×100
=423.
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