123494555
+ × × - × ( - )×36
637
1853 ×(3 -6 ) (13+
5356 ×57
83 ×(13 -8821 ×16 )
13 +4217 +3 +7
2125619 )×913 517 +517 ×16 910 ×11-910 435 ×8 ×59 1011
6126613 ×12+66
13 65 ×215 +24
15 ÷5 57 ×14 +34 ×57×11
7 -7
6122316161
×48 ×34×7× × + × 477356115 32535
53575 352056 17251792185335 1101125 37747878 5951245912 2
2517
1592545 2215514
79192919633762
1613931326 ÷+÷
3737
231456
1152812
45134547
815 ×3114 -6 ÷ 2
458511824 813717513 56214731654 ×56 +156 ×4 32.63
5204813717613
124144 169 +271 )×23+2571×4
5 +32.6×0.2
(
5124631311 × + ÷6 465× × + ×
767 127 -(517 +2 )
4455 ×7 ×4 -13
38956316 46414 +318 )]÷459 ×6+49 ÷1
6 1187499 4
848418 ×58+18 ×42 180÷2.5÷4 7929310 [1-(
1211223531114 1 1
46471634633
5192737233319
484832
1103205825 1859498
4104535103 96
4355562825514 215759 -3.2×0.5+0.4 9.65
305305561213910 1525247 ÷(9.6×4)
2.08×(9.6÷2.4)÷4.8 78×0.69+1.2×6.9+6.9 0.78÷0.25×4
731312642351
356
512×7325×14
1155÷7+5455×7
(81515)3
888879÷1352÷36 (13+1315)÷13 1(11224)]36
491335×859÷8
5857×9÷21×3 2.6×1.9÷2.6×1.9
[
17.64÷4.9+6.73 3.4÷[(1.2+0.5)×5] 0.25×12.5×3.2
155 1634 712312 666
(31.4)815
4579+3759
878889 2.65
551.252130.82 (17-12)14 ×1.7+1.35×1.7 23.47
81181112(5554-6)3
115(13+112) ÷7.8-2.1
0.75×18÷0.15 2.5×3.2×1.25 2842÷14+74×3
4134132+-+ 5.2-11÷7-×3 4÷1+6×
357575733632511111×4÷4× ÷[(-)÷] 1+++++ 4454362481632
7.6×÷[1.9-1.9×(1.9-1.9)] (5 -1.8)÷[(1.15+ )×1 ]
14
8
1225132023
327 -6.46-3.54 4.2÷1.5-1.5×0.6 (0.92+ )÷(4-2 ) 17259
533224 (4 -3 )÷( + ) 51.6÷[(3 -1.25)× ]
6414755
19.98×37-199.8×1.9+1998×0.82 9999×7+1111×37
231÷2312311232 (70+168)×69 8.89
1-1÷2-1÷3-16 2007×20052006
1.65÷5+1.29×0.2+350×20% (
9
×36+8.89×63+8.89
×113(13 -
24215+112)×3+35
216
3113714×[-(-)] 24×(-)÷ 4.85×0.17+0.485×8.3 98654164
21634511+×99+ 2-2.86×(6.25-6) 54.2- +4.8- 14714
0.7÷[(51
6 -4 )×24]
78÷9×3355÷72
25×1115+25÷154 [(
64÷(2-1.02)+0.61×14 200023+(45-23)×53 (45-14)×6911]÷20 (10
99÷12.5÷25÷0.8÷4
115+349)×15-45÷49
12+14)÷(415÷4-10)
1.47
7.28-(1.25+0.28) 9990×200.8+1×2008 0.8×4×12.5×2.5
121123 ÷[( + )× ] 4×0.6+0.6÷ 33.02-(148.4-90.85)÷2.5 53513
(1÷27+27÷1)÷5.1
[1-(15+3110)]÷8 56 1212÷[3×(6+13)]
3141.6×58+3.6÷344)×29×(4537+8-4) 213+3×34 11
35×7.27+2.73×35
(56-34)÷(14+16)
521511×[(53)÷6]
( 5411251124.85- +5.15- + ×( - ) 5×(+ )×17
991313231517
34136621417 ÷[( +)× ] - ×( + ) 4547
5794719
10.2-(1.25 + 2.5)÷1.5 1
1116 ×40-91
16 ÷40
5315723563438 18 ÷(14 + 2.5×45 ) 34×(
117+113)×13 12
739711257110
67 - 67 ×( 21
3 + 9[1-(12-124)]×
3
) (-×
253457872451)÷ ÷[(-)×3] (8×+÷)×12.5
22156399851131115121 +× ÷[(+)×] (+-)÷
963 1920×17-35÷7 8.24
2219.050.812.5
2577191597
512206-2.4÷2.5÷0.4 24.8105124.8512 709284291716 13
84540-155316÷7÷4 7583246112435
321583.6 1.56
41315211 4452 75.8675.878.53 136
5455
412120.75115
118(142.545) 6.75 223554 25333648
778.884378.817 -1156+3.25-26 91481415171715 727115110 14
234793591.625238
12÷[2113×(6+3)]
12315113710 (11129318)×36 11921516143524÷[-(+)] 81054 19385265511
38 ×4÷38 ×4
(412-3310)×(4-213) 17
25×1115+25÷154
87111235325 5843+5384 ×[(1113+1.5)÷14] 738÷9×5÷3572 15
8635152 ÷ 4 × 23
58 ÷ 712 ÷ 710 3.3[383135(140.15)]23+(4255-3)×3
[( 6934111411-)×]÷ (+)÷(÷4-) (+)×15-45÷49
112054245101549111111111++++++++ 2612203042 1255×(6+12)+0.8 11
839[4(237168)]
56×(29÷56+ 56)
(0.92+2725 )÷(4-2 9 ) 567290÷〔611×(34+16)〕 920 ÷ [ 12 ×(25 + 45 )]
(13445)815 521511×[(53)÷6]
51.6÷[(3 25 -1.25)×45 ] (5 25 -1.8)÷[(1.15+132
20 )×1 3
]
16
(41771121 + )÷ + [1-( - )]× 3.64×[1÷(2 -2.09)] 5431024310
(2512 +158 +2712 +3. 375
7150.24-2270.875
(21555+3)÷6×11
(13+34)×24
)×320 19 +18 ÷ 384 +9 2135.432312334938×〔89÷(56-34)〕 0.5+596×(0.15+20) 17
13 +0.2)×7
8 ÷(3—0.5) 25(1563310) 31115÷[(12+20)×6]
( 5
432×3.8+5.2×80%+0.8 (-)×12÷0.1 543
1111111111 + + +……+ + + 1×33×55×717×1919×211223344556
11×2×3 +12×3×4 +11
3×4×5 +……+48×49×50
二、解方程。
45815 416921
2389 X×(1-14 )=3.6
34 ×(X-13 )=0 5X-3×1077 =5 5
18
2334
12 -415 X=10
-23 X= 1
3
114192 5×(X- )=2 1
3
χ×(1+14 )=250
χ×(1-114 -5 )=550 10
X×13×35=4 X
3.2×4+50x=112.8 0.3x
432χ-25 χ=0.3 ×X=825 33×35=18×14 -0.8×60=72 5.9x19
51537 χ+119
4 χ=5
÷X=1120
113χ+6χ=9.5
-2.4x=7
5×1.3-2x=5.5 5x-2+1.8=3.6 7(x-1.2)=2.1
3.2×4+50x=112.8 0.3x
5×1.3-2x=5.5 0.8
34χ+56χ-6=13 1
4×(x-0.8)=8
x-0.15x=8.5 0.8
-0.8×60=725.9 x×(7.2+х)=7.92 6.2-23=35 414 ÷x=2
3
(6+3x)×(x-0.4)=8 20
-2.4x=7 х-х=41.6 -7×1.3=9.9
÷2=18
12 x + 1
3
x=15
311316x-6.4x=36 xx x- x =3
1-34=35 510x7x63.9 21
555x41187
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