1 有理数混合计算题(一) (1).(-85 )× (-4)2-0.25× (-5)× (-4)3; (2).-24÷ (-232 )× 2+521 × (-61 )-0.25; (3).4.0)4121(212)2.0(12 (4).(1876597)× (-18)+1.95× 6-1.45× 0.4 (5).-|-2.52.)5.0(81|)1(324 2 ( 6 )..)]533(5[)2128(22 (7).(-23 )2×(-34 )2÷(-21 )-32-|-9| (8.)(-1).541(15)10()76()1()32 (9)-102+8÷(-2)2-(-4)×(-3) (10).(1.2-3.7)2×(-1)24÷81 ×(-5)3 3 有理数混合计算题(二) (1) –1-61413121+3; (2)-25+5× (-7)÷ (-7)2; (3) –1-(-16)· 2131÷ 61- |-1|; (4) -841 +841 ÷ 3131272 (5) )1(32321)1(4× 105; (6)8-2× (-32)-(-2× 3)2 (7) -13× 32 -0.34×3172 × (-13) - 75× 0.34 (8)(-0.12)×(+2121 )×(-43 )×(-1.6) 4 (9)-(-3)×(+5)×(-1)×(-7)×(+8)×(-9) (10)581585)6.1(1512553115712 (11)16-).6511323(21(12) -99)].21375.25(6572[31 (13)|-1.|43||411||)43(41 (14) -0.182+3.105-(0.318-6.065); (15) |0.1|-|-0.2|+|-0.4|-|-0.2|-|0.1|+(-0.4); (16)|2-7|-|-(-3)2|+|1 31|-|5÷(-6)|-|-3| 5 (17)12558113251253872523 (18) ).5(|)3(24||)3(6)12(3254|32 2.用简便方法计算下列各题: 1)2)212()311()5.5(31; 2)11154)8.5(1110 3) (-5.2)+ 311+(-7.6)+(+5.2)+ 612; 4) 45325213236.832 5)283121172(-56)+1. 6) (-4)-3-{(-5)-[(-7)+(-3)-(-8)]} 6 答案 有理数混合计算(一) (1 )-9 0 (2 )51 0 6(3 )8 (4 )1 7 .1 2 (5 )6 .2 5 (6 )-1 4 0 (7 )-2 6 (8 )2 7 0 072 7 0 07(9 )-1 1 0 (1 0 )-6 2 5 0 有理数混合计算题(二) 1 (1 )12 1 2 (2 )52 5 7 (3 )-3 (4 )14 1 4 (5 )7 (6 )-1 0 (7 )-1 3 .3 4 (8 )-0 .3 (9 )-7 5 6 0 (1 0 )2 0 (1 1 )22 4 3 (1 2 ) 14 4 (1 3 )0 (1 4 )8 .6 7 (1 5 )-0 .4 (1 6 )16 2(1 7 ) 21 5 (1 8 )75 1 5 2 用简便方法计算下列各题 (1 )-7 (2 )-6 (3 )-4 .1 (4 )13 3 (5 )1 1 9 (6 )-4