(1)0.8×33×1.25
17917
(2) × + ÷10
181018
(10)25×1.25×4×8
(3)9.56+4.875-7
8 +1.44
(4)34 ÷6-16 ×14
(5)4.6×1383
8 +8.4÷11 -18
×5
(7)4÷123 +6×3
5
(8)1835 ×1921919
20 +25 ×20 -20
(9)2225 ×80×8
13
×1.25
11)0.7+3.9+4.3+6.1 12)7.35×99+7.35 13)47-8÷17-9
17
14)46×101 (15)15.6-225
7 -4717)14×213
4 +14×34
(
(
(
(
(
3635
(18) ÷ + +
411178
878
357
(25)( + - )×24
8612
(26)205×32-656 (19)9 ×15 +15 ÷8 +9
(20)3-59 ×711
20 -36
(21)778
6 -15 -15
(22)45122
7 -33 +17 -23
(23)57 ×424
3 +7 ×3
(24)1459 ÷75﹪-3
9 ÷4
28)14 ÷52 ×(14 +1
6 )
29)431
5 -14 -1.75+0.4
32)(11
3 -5 )×45
33)2-[136 +(4 -7
12 )]
34)0.3÷[1÷(3.3-2.95)] 36)(56 -151
3 )×(8 ÷4
)
(
(
(
(
(
(
215
(37)[( - )÷ + ]×
2
(43)8.6÷4.3× 5
346511
(38)(211
5 -7 )×35×9
(39)24×(111
4 +6 -3 )(41) ×[771
8 -(16 -8
(50)58 ×1110 +310
8 ÷11
(51)9124
20 ÷[2 ×(5 +5(52)60×(12 +1
15 -2
(44)67 ×(512 -0.25)÷5
8
(45)[3.6-(4.7+2.3)×3
7
]÷1.2
(49)51]
8 ÷172
4 +9
]
) ) )
(55)(815 +920 ×23 )÷1
12
(58)12×(13 -1
4 )
(59)(9-10×45 )÷34
(77)49 ×[34 -(7116 -4 )]
(79)0.38×7-191950 +4×50
(82)1138 ×[2 ÷(5 ×109 )]
(87)(20.1-21×6
7 )÷5.1
75)(10-511
12 ÷6 )×3 78)25.125―13
5 ―17.4
81)611 ×17-12×3
11
(86)(57 -31
8 )÷56
88)7.6÷5.4÷1.9×5.4
((((
5921
()0.2+[ ×(0.15+ ) (90)24× ×(5× )
62038
151248
(92) × ÷ + (95)15× + ÷16
5843
(96)3.×[1÷(2110 -2.09)]
1.125*3+125*5+25*3+25
3.(23/4-3/4)*(3*6+2)
5. 8/9 × 15/36 + 1/27 7. 8× 5/4 + 1/4
217(97)(13 -14
5 +15 )×45
2.9999*3+101*11*(101-92) 4. 3/7 × 49/9 - 4/3 6. 12× 5/6 – 2/9 ×3 8. 6÷ 3/8 – 3/8 ÷6
9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 )
11. 7/8 + ( 1/8 + 1/9 ) 12. 9 × 5/6 + 5/6
13. 3/4 × 8/9 - 1/3
15. 6 ×( 1/2 + 2/3 )
17. 31 × 5/6 – 5/6
19. 5/9 × 18 – 14 × 2/7
21. 14 × 8/7 – 5/6 × 12/15
23. 3 × 2/9 + 1/3 14. 7 × 5/49 + 3/14 16. 8 × 4/5 + 8 × 11/5 18. 9/7 - ( 2/7 – 10/21 )20. 4/5 × 25/16 + 2/3 × 3/4 22. 17/32 – 3/4 × 9/24 24. 5/7 × 3/25 + 3/7
25. 3/14 ×× 2/3 + 1/6 26. 1/5 × 2/3 + 5/6 27. 9/22 + 1/11 ÷ 1/2 28. 5/3 × 11/5 + 4/3
29. 45 × 2/3 + 1/3 × 15 30. 7/19 + 12/19 × 5/6
5181
(60)101.1-25.93+5.1÷0.85 (61)( - )×( ÷1 )
8493
13216
(62)2.6× +2 × (63)3-1 -
35377
2345121111
(65) × + ÷ (66) ×( + )+ 5772513
1248411(67) × ÷( - ) (68)1 ×1.25+1 ×2.2-1
4351
13844
(69) ×8× ×1.25 (70)4- ÷4-
51355
511352141
(71) ÷[( + )× ] (74) × + ÷
88
(75)(10-51112 ÷6 )×3
(78)25.125―135 ―17.4
(81)63
11 ×17-12×11
3.(23/4-3/4)*(3*6+2)
5. 8/9 × 15/36 + 1/27
7. 8× 5/4 + 1/4 7315(77)49 ×[34 -(716 -14 79)0.38×7-1950 +4×19
50
2.9999*3+101*11*(101-92) 4. 3/7 × 49/9 - 4/3 6. 12× 5/6 – 2/9 ×3 8. 6÷ 3/8 – 3/8 ÷6
9]
) (
9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 )
11. 7/8 + ( 1/8 + 1/9 )
13. 3/4 × 8/9 - 1/3
15. 6 ×( 1/2 + 2/3 )
17. 31 × 5/6 – 5/6
19. 5/9 × 18 – 14 × 2/7
21. 14 × 8/7 – 5/6 × 12/15
12. 9 × 5/6 + 5/6 14. 7 × 5/49 + 3/14 16. 8 × 4/5 + 8 × 11/5 18. 9/7 - ( 2/7 – 10/21 ) 20. 4/5 × 25/16 + 2/3 × 3/4 22. 17/32 – 3/4 × 9/24
23. 3 × 2/9 + 1/3 24. 5/7 × 3/25 + 3/7
11310531
(82) ×[ ÷( × )] (86)( - )÷
82597856
6
(87)(20.1-21× )÷5.1 (88)7.6÷5.4÷1.9×5.4
7
5921
()0.2+[ ×(0.15+ ) (90)24× ×(5× )
62038
151248
(92) × ÷ + (95)15×21 +7 ÷16
5843
21114
(96)3.×[1÷( -2.09)] (97)( - + )×45
103517.(3.2×1.5+2.5)÷1.6 [1–(+)]÷
19143818 –5×÷3 (1–×)÷
1245162579
17÷2×7
311–(1+5)
91212
4×3–1 25504
5÷(7–5)
8682+–3 15346 (5–3)÷(2+4)
439
[1–(14+25)]÷3.5
1×[13÷(12+556)]
[(1–3)×255]÷4
(56–3)÷249 49+27+5118÷2
8629+7×+337 [(1–35)×23]÷4 ÷(1–37) 8–4÷2×1736 (1132+3)÷(1–8) 72×(1–1+1234) 3+4×5+18563 38+13+14
[(1–16×25)÷79 425×–136÷12
1÷3+4×1553 2–2÷4–1356
1657×11+11÷7 12
4–8÷2–1 8×(9+3)–2
7÷2+7×1
1535
455+8÷14+12
78+23÷45+16
12×(1–123+14) 48×(13–12+14)
(35+14)×60–27 97×596
9432–×34–13 6–
512×910–138 1+43559×8+6
625÷9+625× 5–1–566 3×8+355×2 838230×(1+265–12)4×1135+913÷5 4–2÷
8515–14 24×(116+8)
(1–157)×70 15×3+15×477
(8+3–2)×72 72×(1–1+1) (5+
94323491)×9+4 1313
30×(1–1+1)
12×(7+14)
7÷5+1×11 236
23×7+23×5
1÷[(2+1)×153513]
18×9+7×925162516+916
5971259125
[58(1213163)4]23
45×56÷58 76318518116-
12)×24-45) (5×4+47)÷4777
(32×1+17)÷
12 (25+34)÷14+14 (
5121)6 13+3÷12
232556
63(5942137)
21×3+4×21)×1 9774(99+
10)÷9
14÷[(4+2)41553×1011] (56+5)×30 (
(
5×6-
99÷ 4-5-7 1×58+1×41+1
65105
45×47×5-142
235–135÷18
10 – 719 –12119 + 19
12×103-4500÷75
37.5+19.5÷2.5×4
8×5+5151627÷109
1111
45×56+25÷35 35 ×153 – 0.6×53 25×13 ÷52 ×3
10 18 ×[12 ÷(3105 ×9 )] ( 3-7-51212 18×(49+56)
888
4÷([5-12)÷5588]
45 +14 )÷73 +7
10 13.09-8.12-4.88
215 +3
11 )×15×11
537×8+58×57
(
332122
(98)( - × )÷ ×5 (101) ÷[ ×( - )]
44559653
553693
(102)10÷ - ÷10 (103) × ÷ ÷
65
1131
(104)7 -(0.35+2 ) (105)( - )÷ ×
63910
187215
(106)4-1÷4- ×3 (107)[ -( - )]× 41512514
31
(108)8.5× +0.75×5+6.5÷1 (109)1+0.÷0.9-0.75
43
4351
(110)9× +9× +9 (111)24÷[( - )×3]
7763
317712
(112) ×( ÷ ) (113)( - )×
42
1714
(114) ×[( + )÷ ] (115) × ÷
115361585
5153341
(116)( - )÷ (117) ×(1- × )
96183876
1441115
(118)(5÷ - )× (119)(1- ÷ )× 55555316
345
(120) × + ÷ (121)(3 +2 +1 -1 )÷
11411912712712
19143
(122)4÷[1-( + )] (123)7 +3.25+2 +5.48
202577
31111111
(124) × + ×34 (125)( - ÷4× )÷
4111148442
33
(126)(111+999)÷[56×( - )]
78
1117
(127)( + )×160× (128)15-( ÷2+5)
581313
43515
(129)6.4÷ +1.25×3 (130)[0.25×4-( + )]×
556126
7111472122
(134) × + × (135) +( + )×
202525203237
31117
(136) ×( + )÷ (139) ×[280÷(7.28+6.72)]
102385
5
(140)15.6÷[32×(1- )÷3.6]
8
3、解方程。(16分)
χ-3χ=6 6×
551-1χ=1 1222
3χ+1=1 442
χ-4χ=12
7χ=11 χ×(3+2)=
7 5 5X-3×7710=5
X- 27 X=34
X+38X=121 5
6X+5 =13.4 X÷2=
7716
813244+152X=910 8x-14×3=4 (x-6)×56=25
2X + 25 = 35 X×35=20×14
X-3×
521=57 23X÷14=12 3X13 3X=34488 X+738X= 4X-6×243=2
123
÷X= 3 X = 5105 X÷ 626=×13
25 72 8 X =
916×16
51 4x-3 ×9 = 29
1x + 1x = 4
3525
310X-21×23=4
6X+5 =13.4
5X=1519
23X÷14=12 X÷62635=45÷1325
4+0.7X=102 x14x20
25 X-13
3 X=10 821X=415 35X=2572 X-0.25=14
23X+12X=42 26 2(x2.6)8 4χ-6=38
X÷4=15528 8X=196×1651
X+14X=105
X-3X=400 X-0.125X=8
836 X3 4=
31313
X+ X=18 X×( + )= x-0.375x=5 768126
x×2+1=4×3 X-3X=12 5 X-2.4×5=8
3287
332
0.36×5- x = (x- 4.5) = 7
453
4
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
5
38
X- X= x-2x=14 3+1x=17 7-2=2x
792053
1X+5=1X 3X +2= 5 x -5x=1×45
583325
1×1= 7×3= 2349293×12= 8×3= 6×2=
4735×24= 7÷2= 12÷3121042×4= 399÷3= 8÷451051÷3= 488= 1÷3=
7= 7÷7= 3÷3=
422×3= 3-1= 14×3= 240÷3=
534215748×7= 21165÷5= 1×12= 3÷1= 4×5= 13331341574÷1= 391÷4= 9÷3 = (1+1)×12= 1-5117466÷5= 65÷5×1= 2÷1×1= 1×3÷1= (4+1)83336675×1= 82、求比值
1 :1 48 0.12 : 0.3
2323.化成最简单的整数比。
1 : 6 5.6 : 0.7 15 : 12
4.计算下面各题,能简算的用简便方法算。
(1)5×24 (2)4×15 (3)(3-1)×2
182532423
(4)5×2×
3 (5)(1+5)×28 (6)3×3+3×1 694047
(7)3-815÷45
(9)76×111 + 56÷11
(11)
9263 13 (13)934358
5.解方程。 (1)4x =
3510
(3)x28721
(8)7×
4815÷2130 (10)(3-1)÷
812 12)5361112433 14)(51618)÷712
(2)16+3x=13
(4)x3456 ((
(5)x-50%x=12 (6)(125%)x10
(7)χ-5χ=240 (8)3x(28-x)24
96.解比例
(1)x∶6 = 718 ∶4
(3)34 ∶ x = 2∶6
(11)(4+5-
79618)÷136
(14)7÷215+511×299
(17)78×36+7.8×741-745
(2) 1 ∶ 2
5 =163∶x(4) 3
8 ∶x = 5%∶0.1
12) 72510017
15) 0.125×0.25×
(18)1321×17+1712×8
((
(19)7×1+0.125×1+0.5 (20)2.42÷3+4.58×11-4÷3
82243
(22)4.25-35-(21-13)(23)3.8÷3.9+3.9÷0.1+0.1÷3.9
6
(24)12.1-(1115+
21)×105
自我评价 1. 直接写出得数。
1516=
616 344359 = 0.22= 129 10225%= 2.解方程。
40%x+60%=5 (1+5116)x20 5x-371075
3.计算下面各题,能简算的要用简便方法算。 445454 381.251580%1.2527
1421=
1260% 4: x12 118×58+18×41+8
13(22311131411 ) ()16+ 15 1311827277157
4.先化简比,再求比值。
2 3:125% 0.6:3 10分:时
445
一、简算。
★1.1035-998 ★2.5076+99 ★3.3008+449 ★4.428×25×4 ★★5.328-1-28 ★★6.43.2-(3.2-1.28)
★★17.25×2×1.25×4×5×8 ★★18.84×0.25+16÷4
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