1、8= 5= 1= 二、整数除以分数6= 4= 5= 6= 7= 36= 6= 7= 4= 24= 3= 12= 9= 2= 111= 5= 4= 410= 36= 5= 8三、分数除以分数= = = = = = 四、分数混合运算1- () 11 01 () 0.32 62.410(1) (0.4)(0.5) () (5) (0.75)0.4 0.80.8 0.25(1) (125 34) 0.75+0.75 五、解方程 x-= 12x=XX = 57 X= 3X = 六、列式计算 一个数的是64,这个数的是多少? 2。 一个数的等于120的,这个数是多少?3. 乘的积,减去,差是多少? 4.
2、一个数的是,这个数是多少?七、解决问题1、美术班有男生20人,是女生的,女生有多少人?2、甲铁块重吨,相当于乙铁块的。乙铁块重多少吨?3、食堂运来800千克大米,已经吃去,吃去多少千克?4、食堂运来一批大米,已经吃去600千克,正好吃去,这批大米共多少千克?5、 一种电脑现在比原价降低,正好降低800元,这种电脑原价多少元?参考答案3=1/5 2=2/7 3=2/21 2=1/5 6=1/20 4=5/24 7=1/10 2=1/20 4=3/28 5=1/8 6=3/22 10=1/12 12=2/27 2=1/6 15=1/21 5=1/9 11=1/12 3=1/9 4=1/5 9=1/
3、15 4=1/8 8=1/14 5=1/14 1=10/13 =21 4=15/2 5=10 6=8 =56/3 36=160/3 6=36/5 7=5 =10 24=27 3=21/5 12=75/4 =81 2=20 3=15/7 1=5/4 =12 5=14/3 4=7 4=16/7 =13 36=16 5=25/2 8=25/2 =1 =12/5 =3/2 =7/6 =3/10 =16/49 =11/6 =1/2=4/3 =21/25 =6/7 =28/9 =18/25 =4/5 =2/5 =6/19 =5/6 =196/225 =18/13 =25/12 =5/6 =1/25 =0
4、=4/3 ()=1/5 =3/5 =7/10 =8/15 = =1/4 =7/20 =33/10 (0.4)(0.5) =9 =2/5 =0 (5 (0.75)=11/12 =19/12 =125/96=1/15 =15/16 =15/14=100/147 =4 =1=1000 =29 =31= =11110 =5/8=55/16 =404/225 =2=4 =3/2 =5/3=4/7 =1/8 =2/15=0.75 =4/5 =6=1/5 =440 =54 =5/13 =700 =1/3X=15/7 x=0 x=54/25 X=12 x=1/4 x=8/3x=15/4 x=2/17 x=32X=1/6 x=2/3 x=4X=3/5 x=61/40 x=40X=60 x=2/15 x=4/35 60 451/20 3/8 24 2 600 8005、一种电脑现在比原价降低,正好降低800元,这种电脑原价多少元? 6000