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 51/9*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 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18 =14 25/7*100=28 9/5*81=45 8/9*16=18
11/14-3/14+1/8
=4.05 -(2,8+0,7)
=0,55
4,05-2,8-0,7
=4,05-(2,8+0,7)
= 0,55
212+198
=(2012)+(1098)
=2012+1098
=12+98+10200
=1110200
=410
13.75-(3.75+6.48)
=13,75-3,75-6,48
=10-6,48
=3,52
(0,75*42,7+57,3-0,573*25)/3* 7972
=(0,75*42,7+57,3*1-57,3*0,25)/3*7972
=[0,75*42,7+57,3(1-0,25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
= 75/3*7972
=25*7972
=199300
3.45*0.6*2.8=3.45×2.8×0.6=5.796
4.02+5.4+0.98
=4.02+0.98+5.4
=5+5.4
=10.4
5.17-1.8 -3,2
=5,17-(1,8+3,2)
=5,17-5
=0,17
13,75-(3,75+6,48 )
=13.75-3.75-6.48
=3.52
33*145+33*55
=(145+55) *33
=200*33
=6600
369*136-36*369
=100*369
=36900
193*51+193*49
=100*193
=19300
25*32
=25*4*8
=800
79*16+79*78+79*6
=(16 +78+6)*79
=100*79
=7900
25*32
=25*4*8
=800
193*51+193*49
=100*193
=19300
369*136-36*369
=100*369
=36900
33*145+33*55
=(145+55)*33
=200*33
=6600
1.45+15×6= 135
2.250÷5×8=400
3.6×5÷2×4=60
4.30×3+8=98
5.400÷4+20× 5= 200
6.112÷3+20=34
7.(80÷280)÷4=21
8.7(100 -10×5)=120
9.360÷410= 19
10.40×20-200= 600
11.(80-25)* 2= 110
12.745=115
13.90×2÷3= 60
14.16×6÷3= 32
15.300×6÷9= 200
16.540÷9×7=420
17.30×20÷15= 20
18.400÷4×7= 700
19.(350-80)÷9= 30
20.16750=280
21.18-64÷8= 10
22.42÷6+20=27
23.40-5×7= 5
24.860÷3=100
25.41+18÷ 2= 50
26.75-11×5= 20
27.42+7-29= 20
28.5600÷80=70
29.25× 16÷4= 100
30.120×25÷5= 600
31.36×11÷3= 132
32.1025÷25×8=328
33.336+70-6= 400
34.25×9×4= 900
35.200-33×3= 101
36.3020- 1010= 2010
37.12×510= 610
38.25×8+199= 399
39.23×11-13= 240
40.125÷25-5=0
41.4200-220200=2200
42.2280-150=150
43.20×8×5= 800
44.600-3×200=0
45.220÷2= 30
46.35-25÷5= 30
47,36+ 8-40= 4
1)25%*132+1/4*8 2)32*0,125*25
=1/4*132+1/4 *8 =(4+8)*0,125*25
=1/4*(132+8) =(4*25)*(8*0,125)
=1 /4 *140 =100*1
=35 =1000
3)75%*76+25*4+0.75*12
=3/ 4* 76+3/4*12+25*4
=3/4*88+100
=166
4)3200*1/ 8÷ 2/5+1270 5)(2/3+4/5)*7/6
=400*5/2+1270 =22/15*7/6
=1001270 =77/45
=2270
5)6*(1/2+2/3) 6)1
32*(44÷176)
=6*1/2+6*2/3 =132*1/4 =33
=3+4
=7
7)72,25%*99+75,25%
=75,25%*99+75,25%*1
=75,25%*(99 +1)
=75,25%*100
=75,25
①2700×(506-499)÷900 ②33,02-(148,4-90,85)÷ 2,5
=2700×7÷900 =33,02-57,55÷2,5
=18900÷900 =33,02-23,02
=21 =10
③(1÷1-1)÷5.1 ④18.1+(3-0.299÷0.23)×1
=(1-1)÷5.1 = 18.1+1.7x 1
=0÷5.1 =18.1+1.7
=0 =19.8