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1、七年級(jí) 有理數(shù)計(jì)算題 一、 有理數(shù)加法 (9)+(13) (12)+27 (28)+(34) 67+(92) (27.8)+43.9 (23)+7+(152)+65 | +( )| 5231 ( )+| |5231 38+(22)+(+62)+(78) (8)+(10)+2+(1) ( )+0+(+ )+( )+( ) 32416121 (8)+47+18+(27) (5)+21+(95)+29 (8.25) +8.25+(0.25)+(5.75)+(7.5) 6+(7)+(9)+2 72+65+(-105)+(28) (23)+|63|+|37|+(77) 19+(195)+47 (+18)
2、+(32)+(16)+(+26) (0.8)+(1.2)+(0.6)+(2.4) (8)+(3 )+2+( )+12 5 +(5 )+4 +( ) (-2121332531 6.37)+(3 )+6.37+2.7543 二、 有理數(shù)減法 79 79 0(9) (25)(13) 8.2(6.3) (3 )5 (12.5)(7.5) (26)(12)1218 214 1( )(+ )23 2 (20)(+5)(5)(12) (23)(59)(3.5) |32|(12)72(5) ( )( ) ( + )( )( ) 41851 1037452710 ( )3(3.2)756 (+ )( ) (+6
3、.1 )(4.3)(2.1)5.1 71723 ( )(1 )(1 )(+1.75)32432 (3 )(2) (1 )(1.75) 8 5 4 3 24332 3976192 4 + +( )61325 0.5+( )(2.75)+ (+4.3)(4)+(2.3)(+4) 4121 (0.5)(3 )6.75541 三、 有理數(shù)乘法 (9) ( )(0.26) 32 132 (2)31(0.5) (5) (13) (4)(10)0.5(3) 3131 ( ) (1.8)84 3 (0.25)( )4(7) ( )( )( ) 4 7354127 (8)4( )(0.75)21 4(96)(0
4、.25) ( 1 + )56 481 74843 ( )36654397 (36)( ) ( )(8 0.4) (66)94651274334 1 ( )( ) 2135 25 (25) 25 ( + )72 432141 187436597 (2 )( )( )317258165 四、 有理數(shù)除法 18(3) (24)6 (57)(3) ( )53 (42)(6)52 (+ )( ) ( )9 0.25( ) 36(1 )21573139 81 31 ( ) (1)(4)3 74 3( )( ) 0(3 )(7) 3( ) 7697 41 314 4 (24 )(6)7 2(518) 1 (
5、3)( ) ( )( ) 18 318714383 ( )( )438765 ( + )( ) 3.5 ( 0.5) 2983443 617321 1 (1 )1 (7) 7658 ( ) (2 ) 4 5631245 75571253 0.8 +4.8( )2.2 +0.8177319 五、有理數(shù)混合運(yùn)算 ( )(154) (2.4) 2(12754203617318 ) (5 )737 15 (1 1 3 (1 ) (5)( )5 245281151 ( + )( )3742 13 0.34 + (13) 0.34 8(25)(5) 32723175 (13)(134) ( )161 5
6、(4 )(5 )+(4 )3 (1650+3 )(2) 8721418 5 (0.5)(3 )+6.755 2 17887.21+43 +53 12.79 (6)(4)+(32)(8)3 219 ( )+|1 |72 (9)(4)+ (60)12 ( )1 + ( ) 4975218421 |3|10(15) 31 1 ( )2 (2 3 +1 )(1 )(7) 532716521128761 (82 0.04)43 2 2 2323143313 4 22233432452 32 6 23223)(313 +211 0 3 23322138.02321 21 ( 1) 0 6+ 2433 251 10+8 432 (10.5) 515.24.0253132232 4 +6 +2 +(6)231328127327231 (-8) (- ) ( )42321222345158747 7 2 3 9 2143512629 36 31 +(10.5) 2 )2(14.034312 4 + + 3671325312832325.01