37.9×0.0038+1.21×0.379+6.21×0.159怎么简便运算啊??
答案:3 悬赏:0 手机版
解决时间 2021-12-02 00:14
- 提问者网友:半生酒醒
- 2021-12-01 11:14
37.9×0.0038+1.21×0.379+6.21×0.159怎么简便运算啊??
最佳答案
- 五星知识达人网友:夜风逐马
- 2021-12-01 11:59
您好:
谷哥22为您解答:
=0.379x0.38+0.379x1.21+0.159x6.21
=0.379x(0.38+1.21)+0.159x6.21
=0.379x1.51+0.159x6.21
=0.159x(3.79+6.21)
=0.159x10
=1.59
=(455+45)x211-365x(455+545)
=211x500-365000
=105500-365000
=-259500
您好,【谷哥22】为您答疑解惑。
如果满意请选为最佳答案,有不明白的地方可追问,
谷哥22为您解答:
=0.379x0.38+0.379x1.21+0.159x6.21
=0.379x(0.38+1.21)+0.159x6.21
=0.379x1.51+0.159x6.21
=0.159x(3.79+6.21)
=0.159x10
=1.59
=(455+45)x211-365x(455+545)
=211x500-365000
=105500-365000
=-259500
您好,【谷哥22】为您答疑解惑。
如果满意请选为最佳答案,有不明白的地方可追问,
全部回答
- 1楼网友:鸠书
- 2021-12-01 13:47
第一个,变形,0.379×(0.38+1.21)+0.621×1.59=1.59×(0.379+0.621)=1.59
第二个,211×(455+45)-365×(455+545)=211×500-365×1000=105500-365000=-259500
第二个,211×(455+45)-365×(455+545)=211×500-365×1000=105500-365000=-259500
- 2楼网友:等灯
- 2021-12-01 13:37
=0.379×0.38+0.379×1.21+0.159×6.21
=0.379×(0.38+1.21)+0.159×6.21
=0.379×1.59+0.159×6.21
=0.159×(3.79+6.21)
=0.159×10
=1.59
=(455+45)×211-365×(455+545)
=211×500-365000
=105500-365000
=259500
=0.379×(0.38+1.21)+0.159×6.21
=0.379×1.59+0.159×6.21
=0.159×(3.79+6.21)
=0.159×10
=1.59
=(455+45)×211-365×(455+545)
=211×500-365000
=105500-365000
=259500
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