解决问题的策略教学评价实录

17×40=

100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12=

135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4= 4.9×0.7=

1÷5=

6÷12=

0.87-0.49= 17×40=

100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12=

135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4= 4.9×0.7= 1÷5=

6÷12=

0.87-0.49= 17×40=

100-63= 3.2+1.68=

2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4= 4.9×0.7= 1÷5=

6÷12=

0.87-0.49= 17×40=

100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4=

4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4= 4.9×0.7= 1÷5=

6÷12=

0.87-0.49= 17×40=

100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25=

0.36+1.54= 1.01×99= 420÷35= 25×12=

135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 = 3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4= 4.9×0.7= 1÷5=

6÷12=

0.87-0.49= 17×40=

100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20=

3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 =

2 + 4/9 =

3 - 2/3 =

3/4 - 1/2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 = 3/10 +1/5 = 4/5 - 7/10 =

2 - 1/6 -1/3 =

39×4= 51×9= 77×7= 874×3= 304×5= 106×10= 178×3= 78×9= 1.573×6= 3.52×100=

3.54×8=

43.87×4= 163×3= 724×7= 43.7×8= 46.9×8= 78×9= 250×0.4=

37×8=

104×5=

847×4= 8×42=

5.78×92= 78×2=

245×0=

306×103×0= 132×6=

350×1000= 317×4=

1.52×6= 125×0.8= 302×783×0= 264×8= 5.76×9= 3875×0= 1.854×0×100= 937×4= 285×4=

134×3=

25×4=

300×52=

5×42=

1.35×9=

15×8=

125×4=

8.456×1000= 21×8=

32×0.1=

572×8=

372×0= 153×46=

173×10= 15×80= 3 652007×0=

384÷4=

888÷74=

592÷37= 384÷32= 1846÷10=

468÷39= 1460÷20= 50÷2= 78÷4= 24.5÷14= 49.5÷3= 153÷0= 462÷5= 374÷10= 73÷9= 10÷3= 27×3= 90÷15= 48÷4= 640÷16= 39÷3= 24×20= 32×3= 48÷16= 12×8= 27×3= 56÷14=

24÷8= 14×2= 83-45= 560÷80= 96÷24= 40÷20= 40×30= 37+26= 76-39= 605+59= 30×23= 12×8= 27+32= 48+27= 4500×20= 73+15 = 120×600 = 200×360= 6800×400= 280+270= 4×2500= 6000÷40=

5×1280=

4.3＋2.7＝

0.75＋0.25＝

4－0.26＝

0.35＋2.7＝

4.6－1.9＝

0.83－0.3＝

3＋0.05＝

7.2－3.8＝

0.07＋0.6＝

1.39－0.39＝

10－5.4＝

4.7+2.3= 4.5

×0.8=

6×3.4= 0.62

×100=

0.02×0.5= 3.6

÷100=

0.75÷0.25= 0.125

0.96÷2=

0.56÷28= 0.36

0.72÷3.6= ×2= 6.9－0.32= 1.4÷0.3= 6.3×8= 4.8÷0.4= 0.64－2.5= 7.2×0.5= 0.75÷7= 5.6÷0.3= ÷0.8=

3.6÷24= 0.8×1.1= 7.2+12.8=

46.7-3.8=

12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=

10÷20= 24÷15= 8.65×10= 0.35

×0.6=

3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=

2.4÷0.8= 10.8÷9= 9.6÷0.8=

0.108÷2=

4.95÷0.9= 9.65÷0.1= 0.325×100=

2.5×8=

0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4=

1.6÷0.8=

1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=

0.22×102= 9÷0.25÷4= 0.25×3.97×4= (1.2+8.8)×0.4=

50+160÷40= (58+370)÷(64-45)=

120-144÷18+35

347+45×2-4160÷52

(58+37)÷(64-9×5)

95÷(64-45)

178-145÷5×6+42 420+580-64×21÷28

812-700÷(9+31×11)(136+64)×(65-345÷23) 85+14×(14+208÷26)

1.2×2.5+0.8×2.5

8.9×1.25-0.9×1.25

12.5×7.4×0.8

9.9×6.4-(2.5+0.24)

6.5×9.5+6.5×0.5

0.35×1.6+0.35×3.4

6.72-3.28-1.72

0.45+6.37+4.55

5.4+6.9×3-(25-2.5)2×41846-620-380

4.8×46+4.8×54

0.8+0.8×2.5

1.25×3.6×8×2.5-12.5×2.4

28×12.5-12.5×20

23.65-(3.07+3.65)

(4+0.4×0.25)8×7×1.25

1.65×99+1.65

27.85-(7.85+3.4)

48×1.25+50×1.25×0.2×8

7.8×9.9+0.78

(1010+309+4+681+6)×12

3×9146×782×6×854

5.15×7/8+6.1-0.60625

(284+16)×(512-8208÷18)

120-36×4÷18+35

(58+37)÷(64-9×5)

(6.8-6.8×0.55)÷8.5

0.12× 4.8÷0.12×4.8

(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

6-1.6÷4= 5.38+7.85-5.37=

7.2÷0.8-1.2×5= 6-1.19×3-0.43=

6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

10.15-10.75×0.4-5.7

5.8×(3.87-0.13)+4.2×3.74

32.52-(6+9.728÷3.2)×2.5

[(7.1-5.6)×0.9-1.15] ÷2.5

5.4÷[2.6×(3.7-2.9)+0.62]

12×6÷(12-7.2)-6 (4)12×6÷7.2-6

方程:

88x+43=8579 x=97 36x+58=2974 x=81 13x+25=1247 x=94 89x-31=4063 x=46 27x+40=445 x=15 83x-90=1653 x=21 29x-35=545 x=20 97x+81=954 x=9 50x-99=3101 x=64 80x+17=1777 x=22 17x-37=609 x=38 88x+30=2758 x=31 80x+85=565 x=6 49x+43=827 x=16 99x-98=6139 x=63 95x+94=1044 x=10 62x+77=6153 x=98 38x-15=2037 x=54 44x+23=1387 x=31 83x-38=4444 x=54

60x+83=3203 x=52 21x+90=489 x=19 22x+23=2135 x=96 37x+28=509 x=13 67x+39=5466 x=81 92x+67=1079 x=11 38x+45=2021 x=52 64x-67=2813 x=45 5x-96=94 x=38 84x-56=4732 x=57 26x-61=2513 x=99 9x+86=500 x=46 9x-48=744 x=88 43x-94=637 x=17 38x-69=2933 x=79 23x-40=696 x=32 48x-92=1684 x=37 39x+52=2470 x=62 56x-86=2770 x=51 96x+95=3935 x=40 21x-70=1988 x=98 72x+15=7071 x=98

83x-63=7656 x=93

47x+64=1944 x=40

38x+38=1178 x=30

68x+91=4103 x=59

53x+65=1443 x=26

5x-67=48 x=23

46x-74=4112 x=91

74x-34=6700 x=91

3.4-1.4= 7.82-7.2= 2.19+9.1= 10.1-0.89= 0.68+0.42= 8.1-5.1= 0.728-0.24= 0.8+0.18= 0.89-0.25= 1-0.98= 0.048+0.52= 5×400= 19.9+11.1= 187÷1000= 1+3.89= 0.081×10= 75÷10= 0.96÷0.8= 0.8×7= 1.5×7= 1.32×8= 0.7×8= 10.3×2= 5×0.6= 0.9×0.3= 3.5×0.2= 2.01×0= 10×0.05= 0.13×7= 0.21×100=

0.7×4= 0.05×4= 4×0.3= 430-250=

0.17+0.06= 1.02-0.09= 7200÷800= 0.17+0.6= 0.83-0.6= 17×300= 0.98-0.09= 0.2+0.78= 600×700= 10.2+0.02= 0.15+0.7= 670+250=

10.2+0.2= 9.2-6= 8500÷500= 3.2-3.2=

3.7+2.3= 25×100= 3.2-0.32= 2+2.8=

380-290= 0.35+0.5= 0.35+0.63= 3500÷70= 3.1+3= 3.8+0.38=

7500÷250= 3.8+1= 0.95-0.05= 450+780= 3.1+0.3= 3+0.3= 630÷9= 4.5-0.4=

9.5-5= 330×9= 9.53-1.53= 9.5-0.5=

3.5+2.4= 1-0.95= 0.3+0.27= 0.47+0.13=

4.5+4= 4-0.6= 0.95+0.05= 2.5+3.2=

0.74+0.16= 23×100= 9.8-4.8= 480÷40= 0.53÷100= 5.1+2.3= 125×80= 0.078÷10= 0.52+0.4= 70×12=

0.25×100= 3.4-2.8= 0.6-0.37= 0.052×10= 10+0.08= 1-0.75= 0.5×1000= .82+0.3=

13.5+6.5= 3.05×100= 1.2-0.8= 21.6-12.6= 63÷100= 0.83-0.5= 0.76+0.14= 80÷1000=

2.7+0.4= 0.72-0.43= 30×100= 0.92-0.2=

3.5+4.8= 3.5+2.4= 5+0.07= 1-0.61=

0.47+0.23= 0.25+0.75= 3.7+0.33= 0.51+0.33= 1-0.6= 8-4.6= 5.8-3.6= 0.52+0.4=

6.45+5.5= 4.5-1.3= 3.4-2.8= 9.53-1.53= 8.8-6.7= 10+0.08= 9.5-7.3= 7.2+0.8= 7.82+0.3= 8.8-6.7= 9.5-7.3= 1-0.95= 3.4-2.8= 0.96-0.35= 0.35×0.6= 3.08×0.01=

4.95×1000= 6.9×0.1= 0.4×0.5= 2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2= 4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8= 0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8= 1÷2.5= 1.25×0.8= 3.2

4.7+2.3= 4.5×2= 6.9

×0.8=

6×3.4= 0.62－0.32= 1.4

×100=

0.02×0.5= 3.6÷0.3= 6.3

÷100=

0.75÷0.25= 0.125×8= 4.8

0.96÷2=

0.56÷28= 0.36÷0.4= 0.64

0.72÷3.6=

3.6÷24= 0.8×1.1= 7.2+12.8=

46.7－3.8=

12.8÷4= 5.2÷13= 12.5

÷41=

10÷20= 24÷15= 8.65

×0.6= ÷0.04= 0÷1.7= －2.5= 7.2×0.5= 0.75÷7= 5.6÷0.3= ÷0.8= ÷5= 1.64×10= 0.35

3.08×0.01= 4.95×1000= 6.9×0.1= 0.4

×0.5=

2.4÷0.8= 10.8÷9= 9.6÷0.8=

0.108÷2=

4.95÷0.9= 9.65÷0.1= 0.325×100=

2.5×8=

0. 56÷0.7= 0.125×4= 3.28×0.1=

3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4=

1.6÷0.8=

1÷2.5= 1.25×0.8= 3.2÷0.04= 0

÷1.7=

0.22×102= 9÷0.25÷4= 0.25×3.97×4= (1.2+8.8)×0.4=

50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11)(136+64)×(65-345÷23)

38.85+14×(14+208÷26)

23) 1.2×2.5+0.8×2.5

24) 8.9×1.25-0.9×1.25

25) 12.5×7.4×0.8

26) 9.9×6.4-(2.5+0.24)

(27) 6.5×9.5+6.5×0.5

0.35×1.6+0.35×3.4

6.72-3.28-1.72

0.45+6.37+4.55

5.4+6.9×3-(25-2.5)2×41846-620-380 4.8×46+4.8×54

0.8+0.8×2.5

1.25×3.6×8×2.5-12.5×2.4

28×12.5-12.5×20

23.65-(3.07+3.65)

(4+0.4×0.25)8×7×1.25

1.65×99+1.65

27.85-(7.85+3.4)

48×1.25+50×1.25×0.2×8

7.8×9.9+0.78

(1010+309+4+681+6)×12

3×9146×782×6×854

5.15×7/8+6.1-0.60625

39.(284+16)×(512-8208÷18)

40.120-36×4÷18+35

41.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0.12× 4.8÷0.12×4.8

44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6 45.6-1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

48.10.15-10.75×0.4-5.7

49.5.8×(3.87-0.13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

51.[(7.1-5.6)×0.9-1.15] ÷2.5

52.5.4÷[2.6×(3.7-2.9)+0.62]

53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6

方程:

88x+43=8579 x=97

36x+58=2974 x=81

13x+25=1247 x=94

89x-31=4063 x=46

83x-90=1653 x=21 29x-35=545 x=20 97x+81=954 x=9 50x-99=3101 x=64 80x+17=1777 x=22 17x-37=609 x=38 88x+30=2758 x=31 80x+85=565 x=6 49x+43=827 x=16 99x-98=6139 x=63 95x+94=1044 x=10 62x+77=6153 x=98 38x-15=2037 x=54 44x+23=1387 x=31 83x-38=4444 x=54 60x+83=3203 x=52 21x+90=489 x=19 22x+23=2135 x=96 37x+28=509 x=13 67x+39=5466 x=81 92x+67=1079 x=11

64x-67=2813 x=45 5x-96=94 x=38 84x-56=4732 x=57 26x-61=2513 x=99 9x+86=500 x=46 9x-48=744 x=88 43x-94=637 x=17 38x-69=2933 x=79 23x-40=696 x=32 48x-92=1684 x=37 39x+52=2470 x=62 56x-86=2770 x=51 96x+95=3935 x=40 21x-70=1988 x=98 72x+15=7071 x=98 83x-63=7656 x=93 47x+64=1944 x=40 38x+38=1178 x=30 68x+91=4103 x=59 53x+65=1443 x=26 5x-67=48 x=23

74x-34=6700 x=91

3.4-1.4= 7.82-7.2= 2.19+9.1= 10.1-0.89= 0.68+0.42= 8.1-5.1= 0.728-0.24= 0.8+0.18= 0.89-0.25= 1-0.98= 0.048+0.52= 5×400= 19.9+11.1= 187÷1000= 1+3.89= 0.081×10= 75÷10= 0.96÷0.8= 0.8×7= 1.5×7= 1.32×8= 0.7×8= 10.3×2= 5×0.6= 0.9×0.3= 3.5×0.2= 2.01×0= 10×0.05= 0.13×7= 0.21×100=

0.7×4= 0.05×4= 4×0.3= 430-250=

0.17+0.06= 1.02-0.09= 7200÷800= 0.17+0.6= 0.83-0.6= 17×300= 0.98-0.09= 0.2+0.78= 600×700= 10.2+0.02= 0.15+0.7= 670+250=

10.2+0.2= 9.2-6= 8500÷500= 3.2-3.2=

3.7+2.3= 25×100= 3.2-0.32= 2+2.8=

380-290= 0.35+0.5= 0.35+0.63= 3500÷70= 3.1+3= 3.8+0.38=

7500÷250= 3.8+1= 0.95-0.05= 450+780= 3.1+0.3= 3+0.3= 630÷9= 4.5-0.4=

9.5-5= 330×9= 9.53-1.53= 9.5-0.5= 3.5+2.4= 1-0.95= 0.3+0.27= 0.47+0.13=

4.5+4= 4-0.6= 0.95+0.05= 2.5+3.2=

0.74+0.16= 23×100= 9.8-4.8= 480÷40= 0.53÷100= 5.1+2.3= 125×80= 0.078÷10= 0.52+0.4= 70×12=

0.25×100= 3.4-2.8= 0.6-0.37= 0.052×10= 10+0.08= 1-0.75= 0.5×1000= .82+0.3= 13.5+6.5= 3.05×100= 1.2-0.8= 21.6-12.6= 63÷100= 0.83-0.5= 0.76+0.14= 80÷1000=

2.7+0.4= 0.72-0.43= 30×100= 0.92-0.2=

3.5+4.8= 3.5+2.4= 5+0.07= 1-0.61=

0.47+0.23= 0.25+0.75= 3.7+0.33= 0.51+0.33= 1-0.6= 8-4.6= 5.8-3.6= 0.52+0.4=

6.45+5.5= 4.5-1.3= 3.4-2.8= 9.53-1.53= 8.8-6.7= 10+0.08= 9.5-7.3= 7.2+0.8= 7.82+0.3= 8.8-6.7= 9.5-7.3= 1-0.95=

3.4-2.8= 0.96-0.35= 0.35×0.6= 3.08×0.01=

4.95×1000= 6.9×0.1= 0.4×0.5= 2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2= 4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8= 0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8= 1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=

4.7+2.3= 4.5×2= 6.9－2.5= 7.2×0.8=

6×3.4= 0.62－0.32= 1.4×0.5= 0.75×100=

0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=

0.75÷0.25= 0.125

0.96÷2=

0.56÷28= 0.36

0.72÷3.6=

3.6÷24= 0.8

46.7－3.8=

12.8÷4= 5.2

÷41=

10÷20= 24

×0.6=

3.08×0.01= 4.95

×0.5=

2.4÷0.8= 10.8

0.108÷2=

4.95÷0.9= 9.65

2.5×8= ×8= 4.8÷0.4= 0.64×1.1= 7.2+12.8= ÷13= 12.5÷15= 8.65×1000= 6.9÷9= 9.6÷0.1= 0.325÷0.3= ÷0.8= ÷5= 1.64×10= 0.35×0.1= 0.4÷0.8= ×100=

0. 56÷0.7= 0.125×4= 3.28×0.1=

3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4=

1.6÷0.8=

1÷2.5= 1.25×0.8= 3.2÷0.04= 0

÷1.7=

0.22×102= 9÷0.25÷4= 0.25×3.97×4= (1.2+8.8)×0.4=

50+160÷40 (58+370)÷(64-45)

32.120-144÷18+35

33.347+45×2-4160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36.178-145÷5×6+42 420+580-64×21÷28

37.812-700÷(9+31×11)(136+64)×(65-345÷23)

38.85+14×(14+208÷26)

23) 1.2×2.5+0.8×2.5

24) 8.9×1.25-0.9×1.25

7.8×10= 0.6×100= 3.71×10= 4.5×1000= 0.92×100= 6÷12= 0.87-0.49=

5.2×10= 0.28×1000= 6.12×10= 0.479×100= 17.6×1000= 5÷100= 21.3÷10=

14.17÷100= 9.2÷10= 7.13÷10= 1÷100= 0.43÷10= 278.6÷1000= 53.4÷100=

38.2÷100= 2.33÷10= 4.56÷100= 9.02÷

10= 70.77÷100= 356.8÷1000= 3.2×3=

1.4×0.5= 0.08×6= 1.5×0.3= 0.71

×2= 0.25×4= 1.25×8= 4.3×2=

1.2×0.4= 0.6×0.9= 3.4×0.3= 5×

0.6= 4.5×2= 0.03×0.5= 1.6×0.3=

0.23×3= 5.1×2= 9×0.3= 7.1×3= 1.5×6= 0.9×0.4×10= 0.68×8×1.25=

7.1×0.25×4= 16.4×2.9+16.4×7.1= 3.2×

2.8+3.2×7.2= 1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)=

7.2÷3= 8.4÷4= 0.65÷5= 0.93÷3= 2.7÷9= 3.8÷2= 5.4÷0.8= 4.6÷2=

1.8÷0.3= 4.2÷7= 9.6÷0.6= 6.4÷3.2= 11÷0.11= 10÷2.5= 14÷0.2=

0.31÷3= 10.5÷5= 14.7÷0.7= 20÷0.5= 9.6÷1.2= 3.44÷2= 65÷0.3=

9.9÷11= 2.8÷2= 0.96÷3= 17×

40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+

4.35= 10-5.4= 4÷20= 3.5×200=

1.5-0.06= 0.75÷15= 0.4×0.8= 4×

0.25= 0.36+1.54= 1.01×99= 420÷35

=

25×12= 135÷0.5= 3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2= 7/8 + 3/8 =

3/10 +1/5 = 4/5 - 7/10 = 2 - 1/6 -1/3 = 0.51

÷17= 32.8 4.9×0.7= +19= 5.2

÷5=

÷1.3= 1.6×0.4=

1