(26-14)×8 50×(2 80) (10×12)-63 (27-23)×12
(38-16)×24 (24 +38 )×6 (87-42)×15 (84-15×3)
16× (49-28) 45× (84-48] ) (58 37)×6 (64- 9) ×5
95×（64-45）（19-14）×9 5×（6 42）（81-70）×6
（9 31）× 11 ( 85 14)×7 (14 20)×26 (28 16)×8
(52-82)×18 (12-36)×41 (58 37)×8 (64-9 )× 5
(68-68)×55 12× (4 12) 32× (15 25) (6-1)×65
65× (48-12× 4) 58×(87-13) 42×(74+6) (6 9)×2.5
(71-56)×92 6×(37-29) 12×(6 8) ( 12-7) ×6
12×(6 7 ) 68×(19 32) (58 37)×2 (64-45)×4
(88-64) ×21 (16 64) × 65 10 × (4-5) 38 × (50-10)
(18 22) × 8 (37 21) × 38 (50-24) × 9 (18 25) 2
(37 44)×11 (42 22) ×8 (28 22) ×35 (37 10) ×96
(21 78) ×10 6－( 25 75) ( 22 68) ×28 (90-73) × 10
(23-18) × 3 (23-10) × 2 (49-29) × 3 (23 95) × 5
(3 98)×5 (18-3)×6 12×(25 66) 75×(24 66)
13×(25 4) (13×12) ×3 (12 24)×5 (70×25)×32
32×(25 12) 88×(12 44) 10×(76 9) 58×(98 2)
17 ×（10－17） (84 36) ×64 75×(9 2) 83×(10 55)
98×(19 8) 12×(18 12) 12×( 3 85) 50×(34×4)
25×(24 16) 55×(99-9) (7 9)×57 73×(25 4)
(13 12)×14 (13 49) ×55 (19 46) ×88 (55 99) ×5
(13 13) ×22 (15 13) ×55 (19 11) ×22 22×(15 16)
(44 66) ×5 (54 6)×3 (13 15) ×5 15×(46 55)
(13 22) ×55 12×(5 66) 22×4+221 21×3+410
40÷2+174 147+72÷8 9×4+420 2×80÷4
120×5÷2 202+36÷9 30÷5+240 81÷9+877
66×5 774 921 7×4 80×6×2 770÷7 65
807+20÷2 100-50÷5 35-35÷7 302+30×2
600×8÷3 4100÷5 434+25×5 (55 6)×5
60-12×3 64÷8+456 6460×4 5× 7-48÷6
42÷7+36÷6 37×4+19×810×4 -20÷4 15÷3+10÷5
25÷5+ 42 (5+8)×7 72÷9-36÷6 21×4-54÷9
72÷8+9×5 36÷4+21×2 25÷5-16÷4 56÷7+36÷6
500×(400-396) 72÷9-5564 264-453 7650-(546 4530)
65×9-4509×80 980 9000-(4500 250) 6700 72÷8
14×6 9×5 900÷(71-68) 80÷9-42÷6 12÷6+45 ×3
8×(910-720) 760-540 11
65 1250-3500 80×30 5600
9450-3200-4200 2400÷6-45 800× 7-180 1600÷2+230
4000 ÷ 8 350 320÷8+ 64 270 ÷ 3 ×96 30 ÷ 9 320
2800 32× 6 300÷6×9 (6900-2400)÷ 5 (72÷9)÷(56÷8)
54 ÷ 9 ×82 80× 4 ÷5 60×8 1570 60×(23-17)
960÷4×9 350÷5×9 450÷5 1250 (6900-2400)÷5
75÷15+20×5 3096×6 (387-387)+0 160-160÷80
75550÷5 (111+189)×3 125×8÷100 6×250×0
(1+7)×(16－6) 810×4÷4 33÷11+4×91 87+299-299
587+496-674 26626÷26 153÷153 657 32÷(32÷16)
300-(300-222) 75÷15+20×5 75×(25-20) 3390 -10×95
687+(99-67) 1022×4+221 21×3+410 40÷2+174
(1000-988) 35620×90 (250-150)÷30 687+999÷3
(4870-3675)+7200÷9 (94 56) ×3 ( 350÷70) ×5 22×4+221
21×3+410 40÷2+174 147+72÷8 9×4+420
2×80÷4 120×5÷2 202+36÷9 30÷ 5+240
81÷9+877 66×5 774 921 7×3 80×6×2
<p>770÷7 65 807+20÷2 100-50÷5 35-35÷7
302+30×2 600×8÷3 4100÷5 434+25×5
60-12×3 64÷8+456 6460×4 5×7－48÷6
42÷7+36÷6 37×4+19×810×4 －20÷4 15÷3+10÷5
25÷5+42÷6 35÷5+8×7 72÷9-36÷6 21×4-54÷9
72÷8+9×5 36÷4+21×2 25÷5-16÷4 56÷ 7+36÷6
500×(400－396) 72÷9－55 64 264 -453 7650-(546 4530)
65×9-450 9×80 980 9000- (4500 250) 6700 72÷8
14×6 9×5 900÷( 71-68) 180÷9-42÷6 12÷6+45×3
8×( 910-720) 760-540 1110 6500 1250-3500 80×30 5600
9450-3200-4200 2400÷6-45 800× 7-180 1600÷2+230
4000 ÷ 8 350 320÷8+64 270 ÷ 3 ×96 30 ÷ 9 320
2800 32× 6 300÷6×9 (6900-2400)÷ 5 (72÷9)÷(56÷8)
54 ÷ 9 ×82 80× 4 ÷5 60×8 1570 60×(23-17)
960÷4×9 350÷5×9 450÷5 1250 (6900- 2400)÷5
75÷15+20×5 3096×6 (5 9)×66 (6 4)×5
75550÷5 (111+189)×3 125×8÷ 100 6×250×0
p>
(1+7)×(16-6) 810×4÷4 33÷11+4×91 87+299-299
587+496-674 26626÷26 5÷1 657 32÷(32÷16 )
300-(300-222) 75÷15+20×5 (150-75)×5 (25-20)×2
3390-10×95 687+(99- 67) 10（100－98） 35620×90
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 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
=(200 12) (100 98)
=200 12 100 98
=12 98 100 200
=110 100 200
=410
13.75-(3.75 6.48)
=110 100 200 p>
=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
6.10 12÷3 20=34
7.(80÷20 80)÷4=21
8.70 (100-10×5 ) =120
9.360÷40 10= 19
10.40×20-200= 600
11. >
p>
12.70 45=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
20.160 70 50=280
21.18-64÷8= 10
22.42÷ 6 20=27
23.40-5×7= 5
24.80 60÷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
p>
34.25×9×4= 900
35.200-33×3= 101
36.3020-1010=2010
37,12×50 10= 610
38,25×8 199= 399
>
39.23×11-13= 240
40.125÷25-5=0
41.4200-2200 200=2200
42.220 80-150= 150
43.20×8×5= 800
44.600-3×200=0
45.20 20÷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*(132 8) =(4*25)*(8*0.125)
p>
=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
=1000 1270 =77/45
=2270
5)6*(1/2 2/3) 6)132*(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+1,7X1
=0÷5,1 =18,1+1,7
=0 =19,8