1.2x2.5+0.8x2.8简便方法计算
答案:6 悬赏:80 手机版
解决时间 2021-04-03 23:15
- 提问者网友：心如荒岛囚我终老
- 2021-04-03 19:07
1.2x2.5+0.8x2.8简便方法计算
最佳答案
- 五星知识达人网友：蕴藏春秋
- 2021-04-03 19:47
1.2x2.5+0.8x2.8
=1.2x2.5+0.8x2.5+0.8x0.3
=(1.2+0.8)x2.5+0.8x0.3
=2x2.5+0.8x0.3
=5+0.24
=5.24追问
=1.2x2.5+0.8x2.5+0.8x0.3
=(1.2+0.8)x2.5+0.8x0.3
=2x2.5+0.8x0.3
=5+0.24
=5.24追问
全部回答
- 1楼网友：雪起风沙痕
- 2021-04-03 23:17
2.5×（1.2＋0.8）＝2.5×2＝5
- 2楼网友：野味小生
- 2021-04-03 23:12
=1.2*2.5+0.8*2.5+0.8*0.3=（1.2+0.8）*2.5+0.24=5+0.24=5.24
- 3楼网友：低血压的长颈鹿
- 2021-04-03 21:38
1.2x2.5+0.8x2.8
＝3+2.24
＝5.24追问👙非礼呀
＝3+2.24
＝5.24追问👙非礼呀
- 4楼网友：北城痞子
- 2021-04-03 20:55
1.2x2.5+0.8x2.8
=3×0.4×2.5+(1—0.2)×2.8
=3+2.8—0.2×2.8
=5.8—0.56
=5.24
=3×0.4×2.5+(1—0.2)×2.8
=3+2.8—0.2×2.8
=5.8—0.56
=5.24
- 5楼网友：底特律间谍
- 2021-04-03 20:43
1.2x2.5+0.8x2.8
=1.2x2.5+0.8x(2.5+0.3）
=1.2x2.5+0.8x2.5+0.8x0.3
=（1.2+0.8）x2.5+0.24
=2x2.5+0.24
=5+0.24
=5.24追问👎👏👍
=1.2x2.5+0.8x(2.5+0.3）
=1.2x2.5+0.8x2.5+0.8x0.3
=（1.2+0.8）x2.5+0.24
=2x2.5+0.24
=5+0.24
=5.24追问👎👏👍
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