资源描述
(1)0.8×33×1.25
(2)×+÷10
(3)9.56+4.875-+1.44
(4)÷6-×
(5)4.6×1+8.4÷-1×5
(7)4÷1+6×
(8)18×+2×-
(9)2×80××1.25
(10)25×1.25×4×8
(11)0.7+3.9+4.3+6.1
(12)7.35×99+7.35
(13)47-8÷17-
(14)46×101
(15)15.6-2-4
(17)14×2+14×3
(18)÷++
(19)×+÷+
(20)3-×-
(21)--
(22)4-3+1-2
(23)×+×
(24)÷75﹪-÷
(25)(+-)×24
(26)205×32-656
(28)÷×(+)
(29)4-1-1.75+0.4
(32)(-)×45
(33)2-[+(-)]
(34)0.3÷[1÷(3.3-2.95)]
(36)(-)×(÷)
(37)[(-)÷+]×
(38)(-)×35×
(39)24×(+-)
(41)×[-(-)]
(43)8.6÷4.3×
(44)×(-0.25)÷
(45)[3.6-(4.7+2.3)×]÷1.2
(49)÷+
(50)×+÷
(51)÷[×(+)]
(52)60×(+-)
(55)(+×)÷
(58)12×(-)
(59)(9-10×)÷ (75)(10-÷)×
(77)×[-(-)] (78)25.125――17.4
(79)0.38×7-+4× (81)×17-12×
(82)×[÷(×)] (86)(-)÷
(87)(20.1-21×)÷5.1 (88)7.6÷5.4÷1.9×5.4
(89)0.2+[×(0.15+) (90)24××(5×)
(92)×÷+ (95)15×+÷16
(96)3.64×[1÷(-2.09)] (97)(-+)×45
1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92)
3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3
5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3
7. 8× 5/4 + 1/4 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 14. 7 × 5/49 + 3/14
15. 6 ×( 1/2 + 2/3 ) 16. 8 × 4/5 + 8 × 11/5
17. 31 × 5/6 – 5/6 18. 9/7 - ( 2/7 – 10/21 )
19. 5/9 × 18 – 14 × 2/7 20. 4/5 × 25/16 + 2/3 × 3/4
21. 14 × 8/7 – 5/6 × 12/15 22. 17/32 – 3/4 × 9/24
23. 3 × 2/9 + 1/3 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
(60)101.1-25.93+5.1÷0.85 (61)(-)×(÷1)
(62)2.6×+2× (63)3-1-
(65)×+÷ (66)×(+)+
(67)×÷(-) (68)1×1.25+1×2.2-1
(69)×8××1.25 (70)4-÷4-
(71)÷[(+)×] (74)×+÷
(75)(10-÷)× (77)×[-(-)]
(78)25.125――17.4 (79)0.38×7-+4×
(81)×17-12× 2.9999*3+101*11*(101-92)
3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3
5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3
7. 8× 5/4 + 1/4 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 14. 7 × 5/49 + 3/14
15. 6 ×( 1/2 + 2/3 ) 16. 8 × 4/5 + 8 × 11/5
17. 31 × 5/6 – 5/6 18. 9/7 - ( 2/7 – 10/21 )
19. 5/9 × 18 – 14 × 2/7 20. 4/5 × 25/16 + 2/3 × 3/4
21. 14 × 8/7 – 5/6 × 12/15 22. 17/32 – 3/4 × 9/24
23. 3 × 2/9 + 1/3 24. 5/7 × 3/25 + 3/7
(82)×[÷(×)] (86)(-)÷
(87)(20.1-21×)÷5.1 (88)7.6÷5.4÷1.9×5.4
(89)0.2+[×(0.15+) (90)24××(5×)
(92)×÷+ (95)15×+÷16
(96)3.64×[1÷(-2.09)] (97)(-+)×45
47.(3.2×1.5+2.5)÷1.6 [1–(+)]÷
–×÷3 (1–×)÷
÷×7 –(+) ×–
5÷(–) +– (–)÷(+)
[1–(+)]÷3.5 [(1–)×]÷4 ++
×[÷(+)] 12÷(1–) [(1–×)÷
[(1–)×]÷4 8–÷× ×–÷
(–)÷ (+)÷(1–) ÷3+×
++÷ 72×(–+) 2–÷–
+×+ +×+ ×+÷7
4–÷– ×(9+)– ÷+×
+÷+ 2–×– 30×(+–)
+÷+ 6–×– ×+÷5
12×(–+) +×+ 4–÷–
48×(–+) ÷9+× 24×(+)
(+)×60–27 5–– (–)×70
97× ×8+×2 15×+15×
(+–)×72 72×(–+) (+)×9+
30×(–+) ×(+) ÷5+×
×7+×5 (-)×24-) (×+)÷
÷[(+)×] (32×+17)÷ (25+)÷+
×+×+ () +3÷
(21×+×21)× (99+)÷9
×÷ ÷[(+)×] (+)×30
×-÷ 4-- ×58+×41+
××- ×+÷ ÷[(-)÷]
235–135÷18 ×153 – 0.6×53 (+)÷+
10 – –+ 25×÷× 13.09-8.12-4.88
12×103-4500÷75 ×[÷(×)] (+)×15×11
37.5+19.5÷2.5×4 3-- ×+×
×+÷ 18×(+)
(98)(-×)÷×5 (101)÷[×(-)]
(102)10÷-÷10 (103)×÷÷
(104)7-(0.35+2) (105)(-)÷×
(106)4-1÷4-×3 (107)[-(-)]×
(108)8.5×+0.75×5+6.5÷1 (109)1+0.54÷0.9-0.75
(110)9×+9×+9 (111)24÷[(-)×3]
(112)×(÷) (113)(-)×
(114)×[(+)÷] (115)×÷
(116)(-)÷ (117)×(1-×)
(118)(5÷-)× (119)(1-÷)×
(120)×+÷ (121)(3+2+1-1)÷
(122)4÷[1-(+)] (123)7+3.25+2+5.48
(124)64×+×34 (125)(-÷4×)÷
(126)(111+999)÷[56×(-)]
(127)(+)×160× (128)15-(÷2+5)
(129)6.4÷+1.25×3 (130)[0.25×4-(+)]×
(134)×+× (135)+(+)×
(136)×(+)÷ (139)×[280÷(7.28+6.72)]
(140)15.6÷[32×(1-)÷3.6]
3、解方程。(16分)
χ-χ= 6×-χ= χ+=
χ-χ=12 χ= χ×(+)=
5X-3×= +X= 8x-×3= (x-6)×=25
X- X= 2X + = X×=20×
X+X=121 5X-3×= X÷=12
6X+5 =13.4 3X=
X÷= X+X= 4X-6×=2
÷X= X = X = ×
X÷ =× 4x-3 ×9 = 29 x + x = 4
X-21×=4
6X+5 =13.4 X-X= 4χ-6=38
5X= X= X÷=
X÷=12 X= X=×
X÷=÷ X-0.25=
4+0.7X=102 X+X=42 X+X=105
X-X=400 X-0.125X=8 =
X+X=18 X×( + )= x-0.375x=
x×+=4× X-X=12 5 X-2.4×5=8
0.36×5- x = (x- 4.5) = 7
x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21
X-X= x-x=14 +x= 7-=2x
X+5=X X += 5 x -x=×45
×= 7×= ×= ×= ×12=
×24= ÷2= 12÷= 1÷= ×=
÷= 8÷= ÷= ÷= ÷3=
×= -= ×= 240÷= ×=
÷= ×12= ÷= ×= ÷=
1÷= ÷3 = (+)×12= 1-÷=
÷×1= ÷×= ×÷= (+)×=
2、求比值
1 : 0.12 : 0.3
3.化成最简单的整数比。
: 5.6 : 0.7 15 : 12
4.计算下面各题,能简算的用简便方法算。
(1)×24 (2)× (3)(-)×
(4)×× (5)(+)×28 (6)×+×
(7)3-÷ (8)×÷
(9)× + ÷11 (10)(-)÷
(11) (12)
(13) (14)()÷
5.解方程。
(1) = (2)+=
(3) (4)
(5)-50%=12 (6)
(7)χ-χ=240 (8)
6.解比例
(1)∶6 = ∶ (2) ∶ =∶
(3)∶ = 2∶6 (4) ∶ = 5%∶0.1
(11)(+-)÷ (12)
(14)÷2+× (15) 0.125×0.25×64
(17)78×36+7.8×741-7 (18)×17+×8
(19)×+0.125×+0.5 (20)2.42÷+4.58×-4÷3
(22)4.25-3-(2-1)(23)3.8÷3.9+3.9÷0.1+0.1÷3.9
(24)12.1-(+)×105
自我评价
1. 直接写出得数。
=
2.解方程。
3.计算下面各题,能简算的要用简便方法算。
×58+×41+
4.先化简比,再求比值。
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