Current location - Training Enrollment Network - Mathematics courses - Solving equation problems in the second volume of the fourth grade
Solving equation problems in the second volume of the fourth grade
7χ-2×9=80

7+5χ=42

100-2X=50

13χ-7.5χ= 18.7

(χ+ 12)×6= 108

180÷X= 12

5\6*5=6 5\4*2=5/8 2\ 1*4=2 4 4\5*2=2/5 3\ 1*5=3/5

7\2*6=7/ 12 5\2*6=5/ 12 3\5*2=3/ 10 5\7*2=5/ 14 5\6* 1=5/6

7\9*2=7/ 18 5\4*2=5/8 2\45*0=0 5\6-5\4=5\2 2\ 1+2\ 1= 1

4\5-4\5=0 3\2-3\ 1=3\ 1 5+4\ 1=5 4\ 1 5\ 1+5\ 1=5\2 7/7+7/7=2

2/ 1*2= 1 3/ 1*3= 1 3/2*3=2 3/ 1*6=2 4/3*8=6

4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35 4/3* 16= 12

4/3* 16= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14 30/ 1*30= 1

30/ 1*30= 1 5 1/9* 102= 18 19/9*76=36 4/9*8= 18 5/8*90= 144

5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4 10/ 1*90=9

5/3* 105=63 19/7*38= 14 5/ 1*25=5 6/ 1*48=8 7/2*28=8 8/ 19* 16=38

8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 8/ 19* 16=38 1/ 1*2=2

9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18 2/7*2=2/ 14

5\4/2=5\2 5\6/2=5\3 3\2/ 1=3\2 5*5\ 1= 1 5\9/3=5\3

7/ 1*8=56 3/ 1*3= 1 3/2*3=2 3/ 1*6=2 4/3*8=6

4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35 4/3* 16= 12

4/3* 16= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14 30/ 1*30= 1

30/ 1*30= 1 5 1/9* 102= 18 19/9*76=36 4/9*8= 18 5/8*90= 144

5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4 5/ 1*25=5

10/ 1*90=9 5/3* 105=63 19/7*38= 14 5/ 1*25=5 8/ 19* 16=38

8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 6/ 1*48=8 2\ 1*2= 1

9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18

4/9×3= 5÷ 1/3 = 1/2÷ 1/3 = 2/7×3/9 ÷2/7 = 2 1/25÷42= 4/5×3/4 = 8.7×0.2= 4×0.25= 1/7× 14= 2/3÷5/6= / kloc-0/.25×8= 3/5÷5/ 8= 6/7×3/2= 6×8.8= 4/ 1 1÷4= 4/9×3/8= 5/3÷5= 0÷8/3= 4/7 -2/3= 2/7×2 = 4 1/ 12×4= 4÷3/ 16= / kloc-0/2÷9/4 = 75/ 8 ÷5= 12× 16/9 = 2/3×3= 8÷9/4 = 5/3÷3/5 = 4/5×5/8 = 7/9×9/7 =

2.64+3.6= 2.4×50= 3500÷70= 2050-298= 2+7÷9= 0.3÷3%= 8 1.2- 1 1÷7-×3= 6696÷62-6.5× 10.6 =

1.89÷ 100= 0.82+0.08= 73× 1= 0.63× 10= 4÷ 10= 17÷ 1000=

0.56+0.4= 1.25× 100= 5.6+99=

100÷25= 1-0.93= 90-0.9=

794- 198= 68×25= 6756- 193-207=

72× 125= 97×360+3×360=

Find the ratio 23: 38 45: 49 57:10 20: 23 32: 29 35: 41simplified ratio 28: 3516: 3212: 22 36: 72/kloc-0.

Find the ratio of 23: 38 45: 49 57:10 20: 23 32: 29 35: 41.

35:47 13: 17 25:27 23:29 39:40 53: 100

12: 13 14:25

Oral calculation 1-25%-35%=

1÷2=()%

33× 1/2=

25÷ 1/2=

15%+25%=

(9/7+ 12/ 19)×0=

33%+57%=

16×3/ 16=

(8/7- 1/7)×2=

52÷82%×0=

13× 1× 1/2=

23×3/5×5/3=

35:47 13: 17 25:27 23:29 39:40 53: 100

12: 13 14:25

1, write directly. (8 points)

1÷ 13 = 1- 12 - 13 = 58 ×23 = 56 ×( 18+625 )

16 × 12= 29 ÷35 = (3 18 +79 )×0= 12 +7 12 =

/On the left side of the fractional line is the denominator * multiplication sign.

2/ 1*2= 1 3/ 1*3= 1 3/2*3=2 3/ 1*6=2

4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35

4/3* 16= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14

30/ 1*30= 1 5 1/9* 102= 18 19/9*76=36 4/9*8= 18

5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4

10/ 1*90=9 5/3* 105=63 19/7*38= 14 5/ 1*25=5

8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 6/ 1*48=8

9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18

Choose! ! !