(5/9+1/36)*9+3/4 (5/12+1/6)/(2/5*7/8) 7.6/13+5.4*1/13 5/6/{(
来源:学生作业帮 编辑:灵鹊做题网作业帮 分类:数学作业 时间:2024/05/12 17:54:37
(5/9+1/36)*9+3/4 (5/12+1/6)/(2/5*7/8) 7.6/13+5.4*1/13 5/6/{(0.5-3/16)*8/9}简便计算
(5/9+1/36)*9+3/4
=5/9*9+1/36*9+3/4
=5+(1/4+3/4)
=5+1
=6
(5/12+1/6)/(2/5*7/8)
=7/12÷7/8÷2/5
=2/3÷2/5
=5/3
7.6/13+5.4*1/13
=(7.6+5.4)*1/13
=13*1/13
=1
5/6/{(0.5-3/16)*8/9}
=5/6÷{5/16*8/9}
=5/6÷5/18
=3
=5/9*9+1/36*9+3/4
=5+(1/4+3/4)
=5+1
=6
(5/12+1/6)/(2/5*7/8)
=7/12÷7/8÷2/5
=2/3÷2/5
=5/3
7.6/13+5.4*1/13
=(7.6+5.4)*1/13
=13*1/13
=1
5/6/{(0.5-3/16)*8/9}
=5/6÷{5/16*8/9}
=5/6÷5/18
=3
1/2+3/4-6/5 6/7-1/2+4/5 3/4-(7/12-5/7) 2/3+(13/15+1/3) 15/9-
谁能算24点?(4 11 8 9) (2 13 1 10 )(7 13 4 5)(5 11 12 6)(7 7 7 7)
找规律填数:2,3,5,8,13,21,( ).1,4,9,16,( ),( ).6,3,8,5,10,7,12,9,(
1+2+3+4+5+6+7+8+9+1+11+12+13+14+15````````
+1+2+3+4+5+6+7+8+9+10+1+12+13+14.+99=?
几道简算计算题(5/6-4/9)*(0.25+5/7)1/13+12/13*(2.5-1/3)96÷[56*(5/8-0
不难,计算(1)2+(-3)+(-4)+5+6+(-7)+(-8)+9+10+(-11+)+(-12)+13+14+15
1+(-2)+3+(-4)+5+(-6)+7+(-8)+9+(-10)+11+12+(-13)……一直到(-2012)
①0.2+2/5×(5\6-0.75) ②36×(7/9-1/4+13/18)×6/45 ③0.75×5/6-1/3+0
(1)7/8*1/6÷7/9(2)12*(5/6+5/12)(3)20-2/7*7/10+1/5(4)18/13÷39-
算24点:(1)1 5 9 12 (2)1 6 10 13 (3)2 4 8 11(4)3 5 12 12
1-2 3-4 5-6 7-8 9-10 11-12 13 如何解