下面各题能简便的就简便方法计算.999.9+99.9+9.9+0.9 6.92-十一分之八-十一份之三+3.18 497-97×3+37(九分之一+六分之五-十八分之七)×36 九分之四×[0.75-(十六分之七-0.25)]1.32×八分之五+2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/16 19:04:28
![下面各题能简便的就简便方法计算.999.9+99.9+9.9+0.9 6.92-十一分之八-十一份之三+3.18 497-97×3+37(九分之一+六分之五-十八分之七)×36 九分之四×[0.75-(十六分之七-0.25)]1.32×八分之五+2](/uploads/image/z/24556-4-6.jpg?t=%E4%B8%8B%E9%9D%A2%E5%90%84%E9%A2%98%E8%83%BD%E7%AE%80%E4%BE%BF%E7%9A%84%E5%B0%B1%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97.999.9%2B99.9%2B9.9%2B0.9+6.92%EF%BC%8D%E5%8D%81%E4%B8%80%E5%88%86%E4%B9%8B%E5%85%AB%EF%BC%8D%E5%8D%81%E4%B8%80%E4%BB%BD%E4%B9%8B%E4%B8%89%2B3.18+497-97%C3%973%2B37%EF%BC%88%E4%B9%9D%E5%88%86%E4%B9%8B%E4%B8%80%EF%BC%8B%E5%85%AD%E5%88%86%E4%B9%8B%E4%BA%94%EF%BC%8D%E5%8D%81%E5%85%AB%E5%88%86%E4%B9%8B%E4%B8%83%EF%BC%89%C3%9736+%E4%B9%9D%E5%88%86%E4%B9%8B%E5%9B%9B%C3%97%5B0.75%EF%BC%8D%EF%BC%88%E5%8D%81%E5%85%AD%E5%88%86%E4%B9%8B%E4%B8%83%EF%BC%8D0.25%EF%BC%89%5D1.32%C3%97%E5%85%AB%E5%88%86%E4%B9%8B%E4%BA%94%2B2)
下面各题能简便的就简便方法计算.999.9+99.9+9.9+0.9 6.92-十一分之八-十一份之三+3.18 497-97×3+37(九分之一+六分之五-十八分之七)×36 九分之四×[0.75-(十六分之七-0.25)]1.32×八分之五+2
下面各题能简便的就简便方法计算.999.9+99.9+9.9+0.9 6.92-十一分之八-十一份之三+3.18 497-97×3+37
(九分之一+六分之五-十八分之七)×36 九分之四×[0.75-(十六分之七-0.25)]
1.32×八分之五+2.68÷1.6
下面各题能简便的就简便方法计算.999.9+99.9+9.9+0.9 6.92-十一分之八-十一份之三+3.18 497-97×3+37(九分之一+六分之五-十八分之七)×36 九分之四×[0.75-(十六分之七-0.25)]1.32×八分之五+2
999.9+99.9+9.9+0.9
=1000-1+0.9+100-1+0.9+10-1+0.9+0.9
=1110-3+0.9×4
=1110-3+3.6
=1110.6
6.92-8/11-3/11+3.18
=6.92-(8/11+3/11)+3.18
=6.92+3.18-1
=10-1
=9
497-97×3+37
=400+97-97×3+37
=400+97×(1-3)+37
=400-97×2+37
=400-194+37
=206+37
=243
(九分之一+六分之五-十八分之七)×36
=4+30-14
=12
九分之四×[0.75-(十六分之七-0.25)]
=九分之四×[0.75-十六分之七+0.25]
=九分之四×[1-十六分之七]
=4/9×9/16
=1/4
1.32×5/8+2.68÷1.6
=1.32×5/8+2.68÷8/5
=1.32×5/8+2.68×5/8
=5/8×(1.32+2.68)
=5/8×4
=5/2
=2.5