简便计算.0.25×3.86×4 16.7×2.1+10.8 0.43×1029.8×5.6+9.8×4.4&...
答案:2 悬赏:50 手机版
解决时间 2021-03-17 17:53
- 提问者网友:浮克旳回音
- 2021-03-17 09:47
简便计算.0.25×3.86×4 16.7×2.1+10.8 0.43×1029.8×5.6+9.8×4.4&...
最佳答案
- 五星知识达人网友:西岸风
- 2021-03-17 10:09
(1)0.25×3.86×4
=(0.25×4)×3.86
=1×3.86
=3.86;
(2)16.7×2.1+10.8
=35.07+10.8
=45.87;
(3)0.43×102
=0.43×(100+2)
=0.43×100+0.43×2
=43+0.86
=43.86;
(4)9.8×5.6+9.8×4.4
=9.8×(5.6+4.4)
=9.8×10
=98;
(5)76.1×17-76.1×7
=76.1×(17-7)
=76.1×10
=761.
=(0.25×4)×3.86
=1×3.86
=3.86;
(2)16.7×2.1+10.8
=35.07+10.8
=45.87;
(3)0.43×102
=0.43×(100+2)
=0.43×100+0.43×2
=43+0.86
=43.86;
(4)9.8×5.6+9.8×4.4
=9.8×(5.6+4.4)
=9.8×10
=98;
(5)76.1×17-76.1×7
=76.1×(17-7)
=76.1×10
=761.
全部回答
- 1楼网友:执傲
- 2021-03-17 10:52
(1)0.25×3.86×4
=(0.25×4)×3.86
=1×3.86
=3.86;
(2)16.7×2.1+10.8
=35.07+10.8
=45.87;
(3)0.43×102
=0.43×(100+2)
=0.43×100+0.43×2
=43+0.86
=43.86;
(4)9.8×5.6+9.8×4.4
=9.8×(5.6+4.4)
=9.8×10
=98;
(5)76.1×17-76.1×7
=76.1×(17-7)
=76.1×10
=761.
=(0.25×4)×3.86
=1×3.86
=3.86;
(2)16.7×2.1+10.8
=35.07+10.8
=45.87;
(3)0.43×102
=0.43×(100+2)
=0.43×100+0.43×2
=43+0.86
=43.86;
(4)9.8×5.6+9.8×4.4
=9.8×(5.6+4.4)
=9.8×10
=98;
(5)76.1×17-76.1×7
=76.1×(17-7)
=76.1×10
=761.
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