人教版七年级数学上册第一单元有理数复习题精选56Word格式文档下载.docx
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人教版七年级数学上册第一单元有理数复习题精选56Word格式文档下载.docx
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(-3)+(-9)(2-5)÷
42+(4-7)
3
(-8)+9÷
(-—)-(-6)-(3+0)×
32×
(7-0)
5、用科学记数法表示下列各数。
-14000000400053000000-6000000
1800-80000007500000-939000
6、下列用科学记数法写出的数,原来分别是什么数?
8×
108-8×
1083.4×
1026.25×
108
-4.2×
105-2.11×
103-2.5×
1041.24×
105
7、用四舍五入法对下列各数取近似数。
0.000558(精确到万分位)58491.9(精确到个位)
0.297512(精确到0.1)0.00937(精确到0.01)
8、计算。
3-|-6||9+(-8)||-9|-(-3)
4
—6.5,-3.5,0,3.25,-0.5,-3.2,-1.
5
2、已知x是正数,并且-5<
2,在数轴上表示x所能取得的所有数值。
-—-5.5,-3.5,0,-0.75,-2.5,3.2,-2.1.
9
-750+750-59+(-85)-90-75
12-(-24)-4×
(-11)5-(-16)
-—+14-3÷
(-20)4+(-2)
5÷
(-—)(-140)×
(-0.8)-(-90)×
3.5
-8×
30÷
(-1.4)÷
(-5.5)(-1)2÷
4+(-3)3×
2÷
(-—)×
(-1)+(-3)-(7+8)÷
33+(8-6)
(-5)+4×
(-2)-(3+9)-33÷
(3-8)
1300004000000098000000-159000000
10039000000075000-77000000
-6×
103-2×
103-1.7×
1024.79×
9.9×
105-9.04×
1074×
108-6.04×
0.0000738(精确到万分位)56501.8(精确到十分位)
82.2084(精确到0.01)0.0905(精确到0.01)
6-|-3||6-(-8)||-9|+(-5)
—3.5,-3.5,0,2.25,-1,-3.4,-2.
4,在数轴上表示x所能取得的所有数值。
—-10,-10,0,1.75,-3,-2.2,3.7.
-800-350-15+(-42)-65+45
-46+(-4)3×
(-7)7×
(-28)
205-(-23)7×
(-10)
5×
(-—)(-6)×
(-8)-(-8)×
4
-100×
70-(-200)×
(-0.15)(-1)3÷
2+(-4)2×
8
1÷
(-4)-(-3)(4-1)-22÷
(4-2)
(-8)-1÷
(-—)+(-9)-(7-1)-42÷
(5+7)
-9000000-10000900000-43500
-110000140005600000-9840000000
7×
1058×
104-9.1×
102-1.11×
103
4.9×
1083.09×
1051.7×
1076.78×
0.000917(精确到万分位)3.60209(精确到十分位)
0.110615(精确到0.1)0.0715(精确到0.001)
1+|3||5+(-2)||-9|+(-5)
-—5.5,-5,0,3,-0.25,-2.4,-0.7.
6,在数轴上表示x所能取得的所有数值。
—-10,-7.5,0,-1.75,0.25,-5.2,2.5.
-450+700-98-(-11)-70+5
-50+(-33)-10×
(-19)-10×
(-22)
—×
55÷
(-24)9-(-27)
9÷
(-—)(-18)×
(-14)+(-25)×
35
-0.6×
40×
(-4)×
(-2)(-2)2×
6+(-3)3÷
3
(-4)-(-8)(2+5)-42+(8+0)
(-9)×
(-—)+(-6)(4+5)×
22÷
(6-0)
-800300018000000-771000
-14000000-16000020000-116000000
-1×
1086×
1021.2×
1079.55×
8.7×
1069.07×
1026×
107-5.6×
104
0.0000535(精确到万分位)1.58165(精确到十位)
3.51423(精确到0.001)0.00931(精确到0.01)
7-|-7||5-(-9)||-4|+(-7)
-—4,-3.5,0,2.75,-0.5,-1.6,-2.3.
2、已知x是正数,并且-3<
—8.5,5,0,-2.75,0.25,-6.4,-3.2.
-450-650-54-(-56)-60+95
9+(-7)-10÷
(-1)-5+(-30)
-—+63÷
(-30)-2+(-2)
(-—)(-1.4)×
(-40)+(-10)×
30
6×
60÷
(-12)-(-30)(-2)2÷
4-(-4)3×
6
3÷
(-6)-(-5)(1-3)÷
33-(4+7)
(-8)×
(-—)+(-7)-(6-6)+12÷
(9+5)
-10000030000001400000-243000
-1300000400005800000-906000
-9×
1065×
108-1×
104-8.62×
106
7.9×
105-3.96×
108-2.9×
103-2.67×
0.0000681(精确到万分位)3.22526(精确到个位)
7.58818(精确到0.1)0.0072(精确到0.001)
9+|1||2+(-7)||-7|+(-6)
—6.5,-6,0,0.75,-1.5,-1.6,-1.8.
—-8.5,-5,0,-2,2,2.2,4.
-400-35097+(-30)-10-80
-10-(-50)-10÷
(-29)-4÷
(-27)
-—+12-1÷
(-12)-2×
(-30)
3×
(-—)(-1.6)×
(-0.2)×
(-6)×
300
-180×
20+(-100)÷
(-0.8)(-1)3÷
4-(-3)3÷
(-—)+(-9)+(-4)(1+6)×
23+(2+4)
(-7)÷
4×
(-—)+(-9)-(1+3)÷
12+(2+5)
7000000-7000073000-6060000
500000-38000009000000-7030000
1×
1085×
1057.8×
103-6.26×
1.4×
1072.6×
1064.2×
104-5.48×
0.0000539(精确到万分位)0.540354(精确到十分位)
0.473818(精确到0.001)0.00812(精确到0.01)
3+|2||-9-(-3)||-6|-(-5)
-—4.5,-4,0,3.25,-1.75,-1.2,-3.4.
2、已知x是正数,并且-4<
3,在数轴上表示x所能取得的所有数值。
-—-5.5,9.5,0,-1.5,-1,-5.2,2.2.
-800+600-78-(-16)-75-25
-37+(-43)1×
(-11)-2-(-28)
5-10×
(-1)-4×
(-11)
6÷
(-—)(-20)×
(-1.4)+(-65)×
50
-16×
0.6+(-6)×
(-1.5)(-1)2÷
4-(-2)2÷
2
4÷
(-—)+(-5)-(-6)(8-0)×
43+(6+2)
(-9)-9÷
(-4)-(4+9)-13×
(6-1)
-800-50007300000-690000
80000003200020000000-71600
3×
1054×
102-8.2×
103-7.53×
107
3.2×
1021.24×
106-1.8×
104-8.35×
0.0000823(精确到万分位)908.217(精确到十位)
8.88184(精确到0.001)0.00606(精确到0.001)
2+|-5||-9-(-4)||-4|+(-6)
-—3.5,-3.5,0,1.5,-3,-0.8,-2.
—6,3.5,0,1.75,1.5,2,-3.2.
-850-250-82-(-73)-15-50
-6+(-45)7×
(-8)-1+(-2)
216÷
(-2)8+(-17)
(-—)(-8)×
(-40)-(-30)×
-0.2×
(-18)×
(-40)(-3)2÷
3-(-4)2×
5
(-7)-(-4)-(8-6)÷
42-(2+4)
(-4)+2÷
(-—)+(-9)-(0+0)+33+(2-1)
-5000-40000009100000-1130000000
-18000-4300004400000-336000000
9×
1053×
108-9×
1046.06×
102
2.1×
1043.77×
108-5.4×
103-6.02×
0.000501(精确到万分位)4.06255(精确到个位)
7.37478(精确到0.1)0.00849(精确到0.1)
4-|7||-9-(-7)||-4|-(-1)
1、在数轴上表示下列各数,并按从小到大
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