乘除法口诀口算练习

1、1.7 x 5 =8 x 8 =3 x 4 =35 7 =2.6 x 9 =72 8 =56 7 =12 2 =3.6 x 8 =40 8 =4 x 9 =4 x 8 =4.16 4 =7 x 9 =72 8 =40 5 =5.7 x 9 =56 7 =21 3 =5 x 4 =6.54 6 =35 7 =5 x 8 =3 x 2 =7.10 2 =8 4 =3 x 3 =3 x 7 =8.5 x 7 =24 3 =24 6 =48 8 =9.2 x 4 =8 x 3 =4 x 8 =63 9 =10.10 2 =12 4 =6 x 4 =7 x 7 =11.63 9 =9 x 4 =2 x

2、3 =36 4 =12.12 3 =8 2 =14 2 =7 x 8 =13.9 x 3 =8 x 6 =40 5 =14 7 =14.35 5 =14 7 =9 x 6 =10 5 =15.5 x 9 =18 9 =6 x 2 =2 x 6 =16.9 x 8 =16 8 =5 x 2 =2 x 2 =17.3 x 6 =7 x 3 =21 7 =7 x 8 =18.20 4 =2 x 7 =56 7 =28 4 =19.8 x 4 =9 x 7 =54 6 =28 7 =20.35 7 =3 x 6 =15 3 =6 x 3 =21.16 2 =16 8 =4 x 3 =4 x 4 =22

3、.9 x 3 =6 x 6 =24 3 =9 x 4 =23.2 x 6 =7 x 3 =16 4 =4 x 8 =24.3 x 9 =7 x 4 =3 x 5 =6 x 8 =25.10 2 =9 x 3 =56 7 =8 x 5 =1.49 7 =36 6 =7 x 4 =6 2 =2.7 x 4 =4 x 3 =3 x 5 =9 x 6 =3.3 x 6 =16 2 =27 9 =8 x 2 =4.24 4 =5 x 5 =18 6 =6 x 3 =5.3 x 9 =18 2 =24 3 =6 x 4 =6.48 6 =5 x 6 =54 9 =8 x 4 =7.4 2 =5 x 2 =

4、8 x 7 =72 8 =8.35 7 =48 8 =81 9 =6 x 3 =9.56 8 =8 x 7 =48 8 =12 6 =10.4 x 3 =8 x 3 =9 x 6 =24 4 =11.28 7 =7 x 8 =5 x 9 =6 x 8 =12.3 x 8 =27 9 =2 x 7 =10 2 =13.14 7 =4 2 =36 6 =3 x 7 =14.6 x 4 =2 x 7 =18 9 =4 x 4 =15.20 4 =56 7 =2 x 7 =8 x 3 =16.64 8 =54 9 =48 8 =9 x 3 =17.3 x 8 =16 2 =56 8 =49 7 =18

5、.7 x 9 =3 x 9 =4 x 2 =4 2 =19.8 4 =56 8 =6 2 =24 8 =20.2 x 2 =24 6 =36 6 =9 x 8 =21.5 x 4 =9 x 7 =4 x 5 =8 4 =22.64 8 =24 6 =18 3 =2 x 8 =23.36 9 =2 x 5 =9 x 6 =24 8 =24.48 6 =14 2 =4 x 5 =30 6 =25.54 9 =35 7 =8 x 2 =8 2 =1.6 x 8 =7 x 4 =7 x 7 =8 x 5 =2.32 4 =18 6 =28 4 =8 x 9 =3.8 x 8 =18 3 =9 x 5

6、=3 x 4 =4.63 7 =45 9 =5 x 7 =9 x 2 =5.54 6 =42 7 =4 x 4 =7 x 2 =6.9 x 6 =35 7 =9 x 2 =2 x 7 =7.3 x 7 =3 x 9 =9 x 3 =6 x 3 =8.64 8 =35 7 =6 x 6 =12 2 =9.8 x 7 =36 9 =8 x 8 =42 6 =10.24 6 =30 6 =7 x 6 =12 6 =11.3 x 6 =4 x 4 =16 2 =6 x 6 =12.35 5 =8 x 8 =24 8 =4 x 7 =13.9 x 2 =56 8 =20 5 =5 x 7 =14.9 x

7、 3 =2 x 3 =2 x 2 =30 6 =15.4 x 3 =3 x 8 =4 x 2 =45 9 =16.3 x 2 =3 x 7 =16 4 =40 8 =17.5 x 5 =6 x 7 =54 6 =21 7 =18.6 x 9 =18 9 =14 2 =8 x 9 =19.8 x 7 =21 7 =35 7 =7 x 5 =20.9 3 =32 8 =45 9 =24 4 =21.16 8 =54 6 =9 x 3 =30 6 =22.6 x 7 =7 x 9 =9 x 6 =54 6 =23.72 9 =12 2 =16 2 =28 7 =24.40 5 =27 3 =12 3

8、 =9 x 3 =25.5 x 4 =20 5 =16 4 =21 3 =1.21 7 =4 x 4 =6 x 5 =16 4 =2.8 x 7 =6 x 2 =2 x 4 =56 7 =3.9 3 =3 x 9 =2 x 6 =36 9 =4.48 8 =42 7 =21 3 =9 x 3 =5.36 4 =6 x 7 =2 x 8 =56 7 =6.49 7 =9 x 2 =4 x 4 =21 7 =7.18 6 =3 x 3 =6 x 5 =4 2 =8.30 5 =18 3 =6 x 7 =20 5 =9.6 2 =6 x 3 =6 x 9 =40 8 =10.8 x 7 =4 2 =

9、3 x 8 =8 x 2 =11.12 6 =8 x 5 =4 x 9 =2 x 6 =12.7 x 8 =54 6 =4 x 8 =6 x 5 =13.6 x 4 =64 8 =2 x 6 =4 x 7 =14.3 x 7 =56 8 =8 x 9 =8 x 5 =15.5 x 9 =9 x 3 =42 7 =5 x 7 =16.4 x 9 =10 5 =8 x 5 =12 4 =17.3 x 4 =36 6 =35 7 =5 x 3 =18.40 8 =2 x 8 =45 9 =20 4 =19.9 x 4 =56 8 =4 x 4 =18 2 =20.14 2 =8 x 2 =16 2

10、=54 9 =21.36 9 =3 x 2 =16 4 =7 x 5 =22.12 3 =6 x 8 =7 x 8 =9 x 7 =23.9 x 9 =3 x 2 =16 2 =2 x 9 =24.6 x 6 =72 8 =36 4 =35 7 =25.8 x 3 =6 x 4 =12 4 =72 9 =1.5 x 8 =3 x 4 =9 x 8 =5 x 7 =2.45 5 =18 6 =7 x 8 =35 7 =3.12 2 =9 x 2 =12 6 =6 x 9 =4.48 6 =3 x 8 =36 9 =3 x 4 =5.5 x 5 =9 x 4 =36 4 =6 x 5 =6.10

11、2 =16 4 =12 4 =16 2 =7.5 x 5 =9 x 3 =9 x 5 =6 x 4 =8.8 x 7 =9 x 4 =8 x 9 =8 x 6 =9.16 4 =56 8 =63 7 =4 2 =10.3 x 8 =32 8 =10 2 =5 x 5 =11.2 x 2 =5 x 2 =5 x 8 =5 x 6 =12.24 4 =3 x 6 =3 x 4 =4 2 =13.63 9 =6 3 =36 4 =5 x 3 =14.2 x 6 =27 3 =5 x 6 =7 x 8 =15.2 x 2 =3 x 2 =14 7 =8 2 =16.7 x 7 =48 8 =7 x 4

12、 =9 x 9 =17.36 9 =6 2 =36 4 =3 x 2 =18.6 x 9 =5 x 5 =8 x 2 =16 4 =19.6 x 4 =8 x 5 =4 x 6 =6 x 3 =20.9 x 7 =40 5 =56 7 =8 x 7 =21.18 2 =9 x 3 =8 x 5 =42 6 =22.4 x 8 =5 x 6 =2 x 6 =40 5 =23.21 7 =36 4 =3 x 4 =5 x 7 =24.14 7 =56 7 =2 x 2 =7 x 3 =25.42 7 =45 5 =81 9 =2 x 9 =1.56 7 =48 8 =2 x 9 =32 8 =2.

13、4 x 2 =6 x 3 =14 2 =15 5 =3.7 x 6 =8 x 6 =8 4 =4 x 9 =4.9 x 4 =6 x 3 =2 x 5 =2 x 7 =5.5 x 4 =3 x 6 =72 8 =9 x 6 =6.6 x 5 =6 x 6 =2 x 2 =2 x 9 =7.24 6 =8 x 7 =3 x 9 =49 7 =8.4 x 6 =5 x 7 =5 x 9 =30 5 =9.2 x 5 =8 x 6 =5 x 7 =2 x 7 =10.28 4 =8 x 9 =3 x 5 =7 x 5 =11.49 7 =7 x 6 =9 x 6 =2 x 5 =12.54 6 =8

14、 2 =32 4 =5 x 7 =13.49 7 =5 x 3 =42 6 =2 x 6 =14.4 x 8 =6 x 7 =7 x 8 =16 4 =15.12 3 =2 x 5 =4 x 4 =54 6 =16.30 6 =3 x 6 =5 x 8 =24 4 =17.5 x 5 =6 x 2 =7 x 9 =7 x 3 =18.15 5 =42 7 =16 2 =49 7 =19.8 x 3 =7 x 5 =45 9 =36 9 =20.20 4 =10 5 =4 x 7 =18 6 =21.21 7 =18 2 =2 x 6 =28 7 =22.8 x 5 =9 x 8 =12 6 =

15、6 3 =23.18 3 =8 x 6 =6 x 7 =3 x 4 =24.2 x 4 =6 x 8 =72 9 =72 8 =25.9 x 5 =48 8 =2 x 8 =5 x 5 =1.24 3 =4 x 7 =72 8 =9 x 4 =2.32 4 =2 x 3 =40 5 =7 x 2 =3.42 7 =5 x 9 =81 9 =16 4 =4.14 2 =24 4 =8 x 9 =2 x 2 =5.16 4 =24 3 =54 9 =4 x 7 =6.36 4 =28 4 =5 x 2 =15 5 =7.5 x 2 =56 8 =18 3 =42 7 =8.42 6 =32 4 =

16、7 x 7 =3 x 9 =9.7 x 7 =36 6 =36 9 =14 2 =10.8 x 9 =27 9 =9 x 5 =8 x 2 =11.30 5 =72 9 =5 x 9 =4 x 4 =12.6 x 2 =81 9 =42 6 =8 x 5 =13.7 x 5 =4 x 3 =27 9 =8 2 =14.2 x 5 =10 2 =4 x 2 =40 5 =15.42 6 =5 x 2 =35 7 =48 8 =16.21 3 =27 3 =28 4 =24 4 =17.9 3 =32 8 =7 x 2 =5 x 6 =18.9 x 3 =9 3 =81 9 =21 7 =19.9

17、 x 4 =36 9 =7 x 2 =9 x 7 =20.42 6 =8 x 5 =42 7 =54 6 =21.6 x 9 =5 x 6 =4 x 8 =15 3 =22.2 x 3 =6 x 7 =2 x 8 =21 3 =23.7 x 4 =3 x 5 =63 9 =2 x 8 =24.8 x 8 =5 x 4 =15 5 =35 5 =25.30 6 =2 x 5 =7 x 5 =4 x 8 =1.4 x 4 =3 x 3 =56 8 =27 3 =2.10 5 =20 5 =9 x 5 =14 7 =3.54 9 =9 x 6 =18 9 =24 3 =4.9 x 9 =8 x 6

18、=5 x 9 =27 3 =5.27 3 =7 x 7 =3 x 9 =25 5 =6.21 3 =49 7 =5 x 9 =45 9 =7.36 9 =14 2 =3 x 7 =5 x 4 =8.7 x 4 =35 5 =16 4 =35 7 =9.2 x 7 =42 7 =12 2 =24 6 =10.8 x 5 =9 x 8 =3 x 7 =9 x 3 =11.9 x 8 =8 x 4 =7 x 6 =5 x 7 =12.8 2 =2 x 7 =12 6 =56 7 =13.54 9 =12 3 =12 4 =5 x 6 =14.32 4 =14 2 =4 2 =36 4 =15.81

19、9 =20 5 =64 8 =48 8 =16.16 8 =49 7 =20 5 =45 9 =17.40 8 =6 x 8 =15 5 =3 x 5 =18.18 6 =8 x 5 =2 x 9 =4 2 =19.6 x 3 =2 x 7 =36 4 =8 x 5 =20.6 x 6 =7 x 2 =27 9 =4 x 9 =21.8 x 8 =63 7 =12 6 =2 x 3 =22.8 x 9 =5 x 7 =81 9 =6 x 4 =23.6 x 7 =5 x 5 =9 x 7 =3 x 6 =24.7 x 3 =45 5 =18 3 =8 x 7 =25.42 7 =36 4 =6

20、 2 =8 4 =1.24 4 =7 x 7 =9 x 8 =15 5 =2.35 5 =42 7 =2 x 9 =25 5 =3.2 x 6 =7 x 6 =3 x 6 =7 x 8 =4.6 x 2 =56 7 =3 x 2 =24 3 =5.21 7 =14 2 =56 8 =2 x 9 =6.25 5 =12 4 =3 x 5 =15 3 =7.6 x 8 =9 x 8 =81 9 =42 6 =8.9 x 9 =4 x 8 =12 3 =35 5 =9.2 x 8 =25 5 =6 x 4 =9 x 2 =10.56 7 =6 3 =4 x 5 =25 5 =11.48 6 =5 x

21、 6 =14 7 =4 x 7 =12.2 x 9 =8 x 8 =49 7 =7 x 5 =13.35 5 =72 8 =27 9 =9 x 6 =14.81 9 =12 6 =8 x 3 =8 x 7 =15.3 x 5 =18 6 =6 x 2 =16 4 =16.14 7 =16 8 =45 9 =18 6 =17.3 x 6 =40 5 =3 x 3 =10 2 =18.56 7 =24 4 =3 x 6 =9 x 4 =19.3 x 4 =7 x 7 =18 3 =7 x 9 =20.18 2 =6 2 =6 x 8 =28 7 =21.18 9 =9 x 2 =6 3 =36 9

22、 =22.9 x 2 =9 x 6 =18 9 =32 8 =23.3 x 7 =35 5 =20 4 =3 x 6 =24.7 x 2 =18 9 =3 x 8 =4 x 2 =25.8 x 3 =2 x 8 =2 x 3 =9 x 8 =1.54 9 =5 x 6 =54 6 =2 x 2 =2.8 x 8 =15 3 =49 7 =16 4 =3.56 7 =35 7 =4 x 5 =3 x 5 =4.40 8 =14 2 =2 x 2 =8 x 7 =5.2 x 3 =2 x 6 =6 x 6 =5 x 2 =6.9 3 =32 4 =12 4 =32 8 =7.5 x 3 =42 7

23、 =10 5 =54 6 =8.16 2 =12 6 =56 7 =18 3 =9.14 2 =5 x 2 =35 5 =6 x 6 =10.6 x 4 =5 x 7 =49 7 =6 x 7 =11.8 x 3 =9 x 3 =18 2 =56 7 =12.18 9 =6 2 =56 7 =8 x 9 =13.72 8 =5 x 2 =63 9 =36 9 =14.56 8 =8 x 3 =27 9 =20 5 =15.7 x 4 =2 x 4 =36 9 =81 9 =16.25 5 =16 4 =35 7 =12 6 =17.16 8 =24 3 =3 x 6 =2 x 8 =18.12

24、 2 =6 2 =28 4 =36 4 =19.28 7 =9 x 9 =5 x 2 =24 4 =20.12 2 =5 x 9 =3 x 9 =54 9 =21.7 x 4 =54 9 =4 x 3 =7 x 2 =22.5 x 9 =42 6 =6 x 3 =7 x 7 =23.7 x 2 =5 x 3 =45 9 =2 x 4 =24.9 x 4 =5 x 2 =6 x 4 =8 x 3 =25.9 x 5 =45 9 =5 x 8 =6 x 4 =1.24 4 =18 9 =54 6 =12 2 =2.35 7 =3 x 6 =18 6 =5 x 6 =3.4 x 9 =45 9 =1

25、2 6 =10 5 =4.9 x 6 =9 x 4 =9 x 3 =5 x 6 =5.15 5 =48 8 =2 x 9 =14 7 =6.9 x 6 =32 4 =48 8 =6 x 8 =7.4 2 =32 8 =4 x 7 =7 x 8 =8.14 2 =2 x 9 =8 x 2 =5 x 8 =9.2 x 8 =30 6 =24 4 =20 4 =10.4 x 9 =12 6 =28 7 =15 5 =11.42 6 =4 x 5 =5 x 9 =63 9 =12.2 x 8 =54 6 =3 x 6 =45 9 =13.42 7 =4 x 8 =6 x 6 =8 x 7 =14.5

26、x 4 =32 8 =28 4 =9 3 =15.64 8 =8 x 7 =4 x 4 =5 x 4 =16.9 x 6 =6 x 6 =72 9 =9 x 5 =17.5 x 6 =8 x 7 =48 8 =2 x 2 =18.8 x 4 =27 9 =4 x 3 =15 3 =19.20 5 =16 8 =63 7 =9 x 4 =20.16 2 =9 x 4 =56 7 =45 5 =21.27 3 =18 3 =36 4 =32 8 =22.7 x 6 =14 2 =5 x 3 =8 2 =23.81 9 =5 x 4 =6 x 3 =5 x 7 =24.8 x 2 =6 2 =16

27、4 =7 x 4 =25.8 x 7 =32 4 =16 2 =12 2 =1.12 3 =7 x 9 =12 6 =36 6 =2.56 7 =9 x 6 =6 x 9 =5 x 5 =3.12 4 =3 x 9 =2 x 7 =3 x 2 =4.16 8 =8 x 9 =6 x 2 =7 x 2 =5.81 9 =9 x 9 =8 x 5 =5 x 6 =6.6 x 7 =18 3 =7 x 2 =3 x 3 =7.40 5 =3 x 2 =3 x 5 =6 x 8 =8.9 x 8 =9 x 4 =4 x 4 =24 3 =9.56 7 =8 x 7 =12 3 =30 6 =10.21

28、 3 =7 x 2 =14 7 =27 3 =11.7 x 2 =5 x 4 =21 7 =5 x 6 =12.72 8 =6 3 =5 x 2 =8 x 6 =13.8 x 6 =10 5 =6 x 3 =6 3 =14.8 x 7 =5 x 2 =8 4 =6 x 7 =15.54 9 =8 x 9 =45 9 =10 2 =16.12 6 =4 x 2 =8 x 3 =72 9 =17.12 4 =30 5 =2 x 2 =9 x 8 =18.40 5 =8 x 7 =8 x 2 =8 2 =19.9 3 =9 x 7 =56 7 =16 8 =20.5 x 7 =6 x 7 =3 x

29、2 =6 x 9 =21.20 5 =6 2 =6 x 3 =45 5 =22.10 5 =16 2 =16 4 =7 x 8 =23.7 x 8 =5 x 4 =5 x 3 =3 x 2 =24.35 5 =36 6 =15 3 =8 x 4 =25.2 x 5 =30 6 =81 9 =15 3 =1.6 x 4 =8 4 =27 3 =3 x 3 =2.15 3 =6 x 6 =14 7 =72 8 =3.36 4 =3 x 2 =8 x 9 =14 2 =4.14 2 =15 5 =9 x 9 =2 x 9 =5.21 7 =5 x 5 =10 5 =54 6 =6.27 3 =7 x

30、 8 =21 7 =8 4 =7.72 8 =9 x 2 =4 x 7 =28 4 =8.9 x 6 =12 2 =5 x 7 =24 8 =9.15 5 =4 x 7 =20 4 =64 8 =10.30 6 =6 x 3 =6 x 7 =2 x 8 =11.9 x 4 =63 9 =12 3 =40 5 =12.3 x 4 =27 3 =8 x 6 =45 9 =13.21 3 =9 x 5 =18 6 =35 7 =14.4 x 7 =6 x 3 =25 5 =20 5 =15.28 7 =32 8 =42 7 =18 9 =16.49 7 =4 x 4 =12 4 =72 9 =17.

31、9 x 9 =40 8 =18 6 =32 4 =18.8 x 4 =54 6 =45 9 =4 x 2 =19.4 x 4 =5 x 7 =30 5 =24 4 =20.9 x 9 =9 x 5 =32 8 =4 2 =21.10 2 =2 x 6 =10 5 =5 x 4 =22.18 2 =12 4 =8 x 6 =32 8 =23.15 5 =24 8 =42 6 =54 9 =24.10 2 =3 x 9 =49 7 =63 9 =25.3 x 7 =81 9 =72 8 =27 3 =1.24 4 =12 4 =8 4 =2 x 8 =2.3 x 4 =15 3 =45 5 =3

32、x 7 =3.6 2 =25 5 =8 2 =40 8 =4.2 x 6 =48 6 =9 x 7 =24 4 =5.72 8 =2 x 6 =32 4 =48 6 =6.7 x 3 =54 6 =4 2 =64 8 =7.4 x 4 =6 3 =6 x 3 =40 8 =8.20 4 =24 8 =81 9 =35 7 =9.4 x 2 =9 3 =21 3 =18 9 =10.8 x 6 =16 4 =49 7 =6 x 2 =11.63 9 =8 x 7 =3 x 5 =36 4 =12.28 4 =4 2 =5 x 2 =5 x 7 =13.20 5 =48 8 =6 x 5 =18

33、3 =14.28 7 =5 x 9 =7 x 4 =3 x 2 =15.12 3 =18 2 =6 x 4 =56 7 =16.3 x 4 =30 6 =4 x 4 =24 3 =17.35 5 =6 3 =9 x 8 =25 5 =18.9 x 7 =40 5 =9 x 9 =6 x 7 =19.3 x 2 =7 x 2 =4 x 3 =40 8 =20.9 3 =4 x 7 =12 2 =2 x 8 =21.3 x 3 =18 9 =9 x 2 =5 x 6 =22.3 x 4 =9 x 7 =6 2 =30 6 =23.30 6 =28 4 =6 x 4 =3 x 4 =24.6 x 7

34、 =24 4 =4 x 8 =4 x 4 =25.35 5 =16 2 =7 x 3 =2 x 2 =1.8 x 9 =14 7 =9 3 =4 x 8 =2.5 x 9 =14 2 =5 x 4 =28 7 =3.24 3 =7 x 6 =18 6 =4 x 9 =4.4 2 =7 x 9 =15 3 =10 5 =5.35 7 =2 x 4 =2 x 3 =9 x 2 =6.24 6 =10 2 =8 x 3 =27 3 =7.6 x 6 =18 6 =7 x 6 =6 x 3 =8.6 x 9 =8 x 6 =8 x 4 =56 7 =9.3 x 4 =8 x 3 =7 x 3 =9 x

35、 8 =10.21 3 =2 x 2 =4 x 4 =9 x 5 =11.20 4 =6 x 6 =2 x 2 =16 4 =12.30 6 =6 x 4 =54 6 =56 7 =13.3 x 5 =30 6 =56 7 =54 6 =14.35 7 =2 x 3 =32 8 =7 x 4 =15.18 3 =6 x 3 =48 8 =56 8 =16.21 3 =3 x 3 =20 5 =72 9 =17.12 3 =9 x 5 =3 x 3 =42 7 =18.3 x 9 =10 5 =14 7 =9 x 9 =19.36 6 =9 x 9 =18 6 =2 x 2 =20.4 x 4

36、=6 3 =21 3 =9 x 8 =21.2 x 7 =32 8 =6 x 6 =2 x 5 =22.3 x 2 =7 x 6 =2 x 6 =5 x 6 =23.28 7 =9 x 8 =14 7 =3 x 7 =24.3 x 8 =4 x 3 =24 8 =2 x 6 =25.7 x 7 =64 8 =40 8 =14 2 =1.9 x 2 =8 x 4 =6 x 4 =24 4 =2.45 5 =18 6 =20 5 =24 3 =3.4 x 6 =28 4 =30 6 =16 2 =4.16 8 =5 x 8 =3 x 4 =8 x 7 =5.6 3 =49 7 =8 2 =4 x

37、7 =6.5 x 5 =8 x 8 =2 x 3 =4 x 4 =7.5 x 9 =5 x 5 =6 2 =63 7 =8.9 x 9 =18 6 =2 x 4 =14 2 =9.8 x 2 =30 6 =8 x 7 =12 6 =10.24 3 =4 x 2 =14 2 =42 7 =11.2 x 8 =18 2 =6 x 2 =9 x 9 =12.2 x 7 =8 x 5 =5 x 8 =14 7 =13.8 x 3 =5 x 9 =9 x 6 =8 x 2 =14.4 x 2 =45 9 =14 2 =6 x 5 =15.9 x 4 =40 5 =27 3 =72 9 =16.4 x 4

38、 =2 x 3 =3 x 8 =48 6 =17.36 4 =3 x 7 =6 x 4 =8 4 =18.9 x 9 =3 x 9 =2 x 4 =18 2 =19.3 x 9 =25 5 =16 4 =56 8 =20.40 8 =42 7 =18 6 =32 8 =21.63 7 =48 8 =8 x 7 =18 2 =22.7 x 4 =2 x 6 =8 x 2 =9 x 4 =23.4 x 2 =14 7 =40 5 =7 x 7 =24.4 x 5 =6 x 7 =9 x 2 =45 5 =25.56 8 =30 5 =6 2 =14 7 =1.64 8 =36 4 =40 8 =3

39、2 4 =2.9 x 4 =9 x 7 =8 2 =9 x 2 =3.8 4 =6 x 4 =4 x 8 =3 x 5 =4.72 9 =14 2 =5 x 2 =8 x 5 =5.6 x 3 =18 6 =8 x 2 =49 7 =6.5 x 7 =2 x 7 =72 8 =28 4 =7.5 x 5 =7 x 3 =6 x 4 =56 8 =8.54 6 =42 6 =56 7 =21 3 =9.12 4 =5 x 8 =3 x 3 =16 2 =10.6 x 6 =64 8 =7 x 4 =9 x 3 =11.48 8 =48 6 =6 x 8 =8 x 2 =12.4 x 5 =81

40、9 =2 x 5 =4 x 4 =13.9 x 6 =8 4 =45 9 =4 x 8 =14.48 6 =9 x 9 =2 x 8 =45 9 =15.3 x 2 =4 x 3 =20 4 =72 8 =16.5 x 6 =36 6 =25 5 =35 7 =17.2 x 4 =5 x 4 =4 x 9 =24 6 =18.3 x 7 =28 4 =24 4 =4 x 3 =19.2 x 9 =3 x 4 =36 6 =54 6 =20.7 x 2 =3 x 2 =2 x 4 =8 x 7 =21.6 x 8 =5 x 8 =9 x 8 =4 x 3 =22.27 9 =5 x 9 =42 7 =7 x 9 =23.32 4 =9 3 =4 x 8 =20 4 =24.28 4 =8 x 2 =16 2 =42