数学计算题快13:30之前速度 求高人解答啊!(1)7/9÷14/27+11/26x13/22(2)6/7x12/13+6/7÷13(3)(2/3-7/12)÷(2/7+1/8)(4)5-6/11÷9/22-2/3要过程和结果能简算的要简算还有化简比:33/5:22 0.125:1/80
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 23:53:04
![数学计算题快13:30之前速度 求高人解答啊!(1)7/9÷14/27+11/26x13/22(2)6/7x12/13+6/7÷13(3)(2/3-7/12)÷(2/7+1/8)(4)5-6/11÷9/22-2/3要过程和结果能简算的要简算还有化简比:33/5:22 0.125:1/80](/uploads/image/z/10398894-6-4.jpg?t=%E6%95%B0%E5%AD%A6%E8%AE%A1%E7%AE%97%E9%A2%98%E5%BF%AB13%3A30%E4%B9%8B%E5%89%8D%E9%80%9F%E5%BA%A6+%E6%B1%82%E9%AB%98%E4%BA%BA%E8%A7%A3%E7%AD%94%E5%95%8A%21%EF%BC%881%EF%BC%897%2F9%C3%B714%2F27%2B11%2F26x13%2F22%EF%BC%882%EF%BC%896%2F7x12%2F13%2B6%2F7%C3%B713%EF%BC%883%EF%BC%89%EF%BC%882%2F3-7%2F12%EF%BC%89%C3%B7%EF%BC%882%2F7%2B1%2F8%EF%BC%89%EF%BC%884%EF%BC%895-6%2F11%C3%B79%2F22-2%2F3%E8%A6%81%E8%BF%87%E7%A8%8B%E5%92%8C%E7%BB%93%E6%9E%9C%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%E8%BF%98%E6%9C%89%E5%8C%96%E7%AE%80%E6%AF%94%EF%BC%9A33%2F5%EF%BC%9A22+++++++0.125%3A1%2F80)
数学计算题快13:30之前速度 求高人解答啊!(1)7/9÷14/27+11/26x13/22(2)6/7x12/13+6/7÷13(3)(2/3-7/12)÷(2/7+1/8)(4)5-6/11÷9/22-2/3要过程和结果能简算的要简算还有化简比:33/5:22 0.125:1/80
数学计算题快13:30之前速度 求高人解答啊!
(1)7/9÷14/27+11/26x13/22(2)6/7x12/13+6/7÷13(3)(2/3-7/12)÷(2/7+1/8)(4)5-6/11÷9/22-2/3要过程和结果能简算的要简算还有
化简比:
33/5:22 0.125:1/80 39:52 2千克:250克
求比值:
0.35:5 162/84 2/5:1/4 45厘米:9米
数学计算题快13:30之前速度 求高人解答啊!(1)7/9÷14/27+11/26x13/22(2)6/7x12/13+6/7÷13(3)(2/3-7/12)÷(2/7+1/8)(4)5-6/11÷9/22-2/3要过程和结果能简算的要简算还有化简比:33/5:22 0.125:1/80
化简比:
3:10 10:1 3:4 8:1
求比值:
7:100=0.07 27:14约等于1.93 8:5=1.6 1:20=0.05
我擦,能看图片吧?
真有才,打这么多字的时候都搜出答案了。
要自己动脑,这不算难题。
用计算机算,学生计算机
(1)7/9÷14/27+11/26x13/22
=7/9×27/14+1/2×1/2
=3/2+1/4
=7/4
(2)6/7x12/13+6/7÷13
=6/7×(12/13+1/13)
=6/7×1
=6/7
(3)(2/3-7/12)÷(2/7+1/8)
=(8/12-7/12)÷(16/56+7/56)
=1...
全部展开
(1)7/9÷14/27+11/26x13/22
=7/9×27/14+1/2×1/2
=3/2+1/4
=7/4
(2)6/7x12/13+6/7÷13
=6/7×(12/13+1/13)
=6/7×1
=6/7
(3)(2/3-7/12)÷(2/7+1/8)
=(8/12-7/12)÷(16/56+7/56)
=1/12÷23/56
=1/12×56/23
=1/3×14/23
=14/69
(4)5-6/11÷9/22-2/3
=5-6/11×22/9-2/3
=5-4/3-2/3
=5-(4/3+2/3)
=5-2
=3
化简比:
33/5:22 =3/5∶2=3/5∶10/5=3∶10
0.125:1/80 =1/8∶1/80=10/80∶1/80=10∶1
39:52 =39/3∶52/3=13∶14
2千克:250克=2000∶250=2000/250∶250/250=8∶1
求比值:
0.35:5 =0.07
162∶84 =162/6∶84/6=27∶14=27/14
2/5:1/4 =8/20∶5/20=8∶5=8/5=1.6
45厘米:9米=0.45∶9=0.05
收起
(1)7/9÷14/27+11/26x13/22
=7/9x27/14+11/26x13/22
=3/2+1/4
=6/4+1/4
=7/4
(2)6/7x12/13+6/7÷13
=6/7x12/13+6/7x1/13
=6/7x﹝12/13+1/13﹞
全部展开
(1)7/9÷14/27+11/26x13/22
=7/9x27/14+11/26x13/22
=3/2+1/4
=6/4+1/4
=7/4
(2)6/7x12/13+6/7÷13
=6/7x12/13+6/7x1/13
=6/7x﹝12/13+1/13﹞
=6/7x1
=6/7
(3)(2/3-7/12)÷(2/7+1/8)
=(8/12-7/12)÷(16/56+7/56)
=1/12÷23/56
=1/12x56/23
=2/7
4)5-6/11÷9/22-2/3
=5-6/11x22/9-2/3
=5-4/3-2/3
=5-(4/3+2/3)
=5-2
=3
收起