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1、1 七年级 有理数计算题 一、有理数加法 (9)+(13) (12)+27 (28)+(34) 67+(92) (27.8)+43.9 |+()| 5 2 3 1 (23)+7+(152)+65 ()+| 6+(7)+(9)+2 5 2 3 1 38+(22)+(+62)+(78) (8)+(10)+2+(1) ()+0+(+)+()+() (8)+47+18+(27) 3 2 4 1 6 1 2 1 (5) +21+(95) +29 (8.25) +8.25+(0.25) +(5.75) +(7.5) 72+65+(-105)+(28) (-6.37)+(3)+6.37+2.75 4 3 (
2、23)+|63|+|37|+(77) 19+(195)+47 (+18) +(32) +(16) +(+26) (0.8) +(1.2) +(0.6) +(2.4) 2 (8)+(3)+2+()+12 5+(5)+4+() 2 1 2 1 5 3 3 2 5 2 3 1 二、有理数减法 79 79 0(9) (25)(13) 8.2(6.3) (12.5)(7.5) (3)5 (26)(12)1218 2 1 4 1 1()(+) |32|(12)72(5) 2 1 2 3 (20)(+5)(5)(12) (23)(59)(3.5) ()() (+)()() 4 1 8 5 8 1 10 3
3、7 4 5 2 7 10 ()3(3.2)7 (+)() 5 16 7 1 7 2 7 3 (+6.1)(4.3)(2.1)5.1 8543 4 3 9 7 6 1 9 2 4+() (+4.3)(4)+(2.3)(+4)4 3 6 1 3 2 2 5 0.5+()(2.75)+ (0.5)(3)6.755 4 1 2 1 4 1 2 1 3 三、有理数乘法 (9) ()(0.26) 3 2 13 2 (2)31(0.5) (5)(13)3 1 3 1 (4)(10)0.5(3) ()(1.8)8 3 3 4 (0.25) () 4 (7) () () () 7 4 7 3 5 4 12 7
4、(8)4()(0.75) (1+)56 2 1 7 4 8 1 14 3 4(96)(0.25) ()3648 1 6 5 4 3 9 7 (36)() ()(80.4) 9 4 6 5 12 7 4 3 3 4 (66)1()() (+)72 22 21 3 1 11 5 18 7 4 3 6 5 9 7 25 (25) 25 (2)()()4 3 2 1 4 1 3 1 14 3 7 2 5 8 16 5 四、有理数除法 18(3) (24)6 (57)(3) 4 () (42)(6) 0.25()5 3 5 2 8 1 (+)() ()9 21 5 7 3 13 9 36(1)() (1
5、)(4)3 1 3 2 7 4 3()() 0(3)(7) 7 6 9 7 4 1 3() (24)(6)3 1 4 1 7 6 2(518) 1(3)() 18 1 3 1 3 1 ()() ()()8 7 14 3 8 3 4 3 8 7 6 5 (+)() 3.5 (0.5) 2 9 8 3 4 3 4 3 6 1 7 3 2 1 1(1)1(7) () 7 2 6 5 8 3 5 6 3 1 2 1 4 5 (2)4 7 5 5 2 7 5 12 5 3 5 五、有理数混合运算 ()(154) (2.4) 12 7 5 4 20 3 6 1 7 3 18 7 5 2()(5) (5)(
6、)5 7 3 7 4 7 1 5 1 5 1 15(113(1) 8(25)(5) 2 1 4 1 5 2 2 1 8 1 (+)() (1650+3)(2) 3 1 21 1 14 3 7 2 42 1 5 2 130.34+(13)0.34 3 2 7 2 3 1 7 5 (13)(134)() (0.5)(3)+6.75513 1 67 1 4 1 2 1 (4)(5)+(4)3 ()+|1|8 7 2 1 4 1 8 1 7 2 2 1 2 1 (6)(4)+(32)(8)3 (9)(4)+ (60)12 |3|10(15) 1()2 3 1 5 3 32 7 16 5 2 1 6 (820.04) 4 3 3 1 2 2 3 2 2 3 1 4 3 3 4 2 3 1 3 123242 2 2 3 2 4 2 5 22 2 3 2 32 2 22 3 2 3 2 2 2 3 ) 3(3131 + 03 2 2 1 2 2 1 23 3 2 4+6 2 3 13 2 1 8 3 12 2 7 3 1 +2+(6) 36 2 723 2 3 1 2 3 1 2 1 (-8)(-) 9 4 2 3 2 1 2 2 2 6296 () 2 2 2 345 11 5 8 7 47 23 2 22 2 1 4 3 5 1