5道简便运算题 能简便的就简便计算 要有算式与题目
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/09/04 10:18:39
5道简便运算题 能简便的就简便计算 要有算式与题目
(1)(3/4÷3/5+1/4)×6/13
(2)35÷(7/8×(1-2/7))
(3)(6-3又3/5×2/3)÷3又3/5
(4)6.15÷2又1/2-1/3×(1/20+4.36)
(5)(1又1/2-0.375)÷(1/25×(2/5+2.1))
看得懂来 能简便的就简便计算 要有题目与算式不要只有答案
(1)(3/4÷3/5+1/4)×6/13
(2)35÷(7/8×(1-2/7))
(3)(6-3又3/5×2/3)÷3又3/5
(4)6.15÷2又1/2-1/3×(1/20+4.36)
(5)(1又1/2-0.375)÷(1/25×(2/5+2.1))
看得懂来 能简便的就简便计算 要有题目与算式不要只有答案
解:
(1)(3/4÷3/5+1/4)×6/13
=(3/4×*5/3+1/4)×6/13
=6/4×6/13
=9/13
(2)35÷(7/8×(1-2/7))
=35÷(7/8×5/7)
=35×8/5
=56
(3)(6-3又3/5×2/3)÷3又3/5
=6×5/18-2/3
=5/3-2/3
=1
(4)6.15÷2又1/2-1/3×(1/20+4.36)
=6.15×2/5-1/60-4.36÷3
=2.46-1/60-436/300
=2.97
(5)(1又1/2-0.375)÷(1/25×(2/5+2.1))
=(1.5-0.375) ÷(1/25×25/10)
=1.125×10
=11.25
(1)(3/4÷3/5+1/4)×6/13
=(3/4×*5/3+1/4)×6/13
=6/4×6/13
=9/13
(2)35÷(7/8×(1-2/7))
=35÷(7/8×5/7)
=35×8/5
=56
(3)(6-3又3/5×2/3)÷3又3/5
=6×5/18-2/3
=5/3-2/3
=1
(4)6.15÷2又1/2-1/3×(1/20+4.36)
=6.15×2/5-1/60-4.36÷3
=2.46-1/60-436/300
=2.97
(5)(1又1/2-0.375)÷(1/25×(2/5+2.1))
=(1.5-0.375) ÷(1/25×25/10)
=1.125×10
=11.25