一、脱式计算。
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
356316                   414 +318 )]÷459 ×6+49 ÷1
6         1187499                     4
848418 ×58+18 ×42 180÷2.5÷4  7929310                   [1-(
1211223531114                1                    1
471634633
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
7313122351                                        
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.÷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
8788                     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)× ]
14755
19.98×37-199.8×1.9+1998×0.82                      9999×7+1111×37
231÷2312311232               (70+168)×69             8.
1-1÷2-1÷3-16                2007×20052006
1.65÷5+1.29×0.2+350×20%                       (
9
×36+8.×63+8.
×113(13 -
24215+112)×3+35
216
3113714×[-(-)]          24×(-)÷           4.85×0.17+0.485×8.3       986541
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             [(
÷(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.×[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×〔÷(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
23                         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