分?jǐn)?shù)混合運(yùn)算與解方程

1、簡(jiǎn)便計(jì)算1125997998+1246+9989（ 870087087）÷ 87125×8.83.4 ×993.4 ×1.014.8 ×1.011.6 1.6 1.6 1.6 ）× 250.125 ×0.25 ×6464.2 ×870.642 ×130078×367.8 ×74171×998439+10011322×6.6 2.5 ×65712118 63 13234.6+3 5 +6 5 +5.44533315 ×( 7 14 

2、47;4 )452.8+5 9 +7.2+3 935348+2.25+5 8 +7 425375+47 +256455311167+16 113534427+39 37+19 +17510.75+ 8+ 4+0.37544444595 +99 5+999 5+9999 54 4 545 (25+12)14 35-2 17 -1 171 548.3-15 6 -4 65196 ×4.25+4 4 ÷ 6510.625 ×0.5+ 8 + 2 ×62.5%353318× 7213 ÷31899992.5×(10+10+10+10

3、)322×4 +25 ×75%-7×0.751 10.25 ×63.5 4 × 132717615 ×2.5-22×41581739+3.125+19+1844165+(2 7 -1.8)33(111+999)÷56×(7-8 )3149.5 ×105 -(50-2 ) ×0.671454711×419 +5 19÷17+117445×( 9 + 15 0.6)3897×8 37.5%+104×0.3751334×(5 85.

4、375)1743.5×14 +1.25 ×210 +3.8 ÷572×156-56 ×7225×32×1253315144.25 543 10.125 ×4+8×8.25+12.5%4.6 ×3.7+54 ×0.37709×99+709312.5 ×70.4 ×238.37-3.25-(1.37+1.75)混合計(jì)算2.3 ×25+3÷0.375356- 216÷9×85.4- (0.4+12 ×0.25)1

5、80×20719266÷383339+17661÷871058+(1.69 0.8)÷2.5125×3+125×5+25×3+259999×3+101×11×(101-92)(23/4-3/4)×(3 ×6+2)3/7 × 49/9 - 4/38/9 × 15/36 + 1/2712× 5/62/9 ×38× 5/4 + 1/44/7 × 5/9 + 3/7× 5/95/2 -（ 3/2 + 4/5）7/8

6、 +（ 1/8 + 1/9）9 × 5/6 + 5/6 3/4 × 8/9 - 1/37 × 5/49 + 3/146×（ 1/2 + 2/3 ）8×4/5+8 ×11/531 × 5/6 5/69/7 -（ 2/7 10/21）5/9×18 14× 2/74/5× 25/16 + 2/3× 3/45/6× 12/153/4× 9/243 × 2/9 + 1/3 5/7 × 3/25 + 3/7 3/14 ×× 2/3 + 1

7、/61/5× 2/3 + 5/69/22 + 1/11÷ 1/25/3× 11/5 + 4/345 × 2/3 + 1/3× 157/19 + 12/19× 5/61/4 + 3/4÷ 2/38/7 × 21/16 + 1/258+370）÷（ 64-45 ）101 × 1/5 420+580-64×21÷2850160÷40136+6×（ 65-345 ÷23）120-144÷18+35347+45×2-4160 ÷

8、;52方程（58+37）÷（ 64-9 ×5）3X-2=2X+1178-145÷5×6+423X=5(32-X)812-700÷（ 9+31×11）5-3X=8X-185+14×（ 14+208÷26）7(2X-1)-3(4X-1)=4(3X+2)-1120-36 ×4÷18+353-X=2-5(X-1)（58+37）÷（ 64-9 ×5）2+3(8-X)=2(2X-15)(6.8-6.8 ×0.55) ÷8.52X+5=3X+120.12 ×

9、4.8 ÷0.12 ×4.8(5X+1)+(1-X)=(9X+1)-(1-3X)（3.2 ×1.5+2.5 ）÷ 1.6(9X+1)+(1-3X)5.38+7.85-5.372(X-2)+2 X+17.2 ÷0.8-1.2 ×52(X-2)-3(4X-1)=9(1-X)6-1.19 ×3-0.4311X+64-2X=100-9X6.5 ×（ 4.8-1.2 ×4）=15-(8-5X)=7X+(4-3X)5.8 ×（ 3.87-0.13 ）+4.2 ×3.743(X-7)-29-4(2-

10、X)=2232.52- （6+9.728 ÷3.2 ）× 2.512-2(2X-4)=X-5 （7.1-5.6 ）× 0.9-1.15÷2.55X-2(X-1)=1754.5.4 ÷2.6 ×（ 3.7-2.9）+0.625X+15-2X-2=1012×6÷（ 12-7.2 ）-612X=4/512×6÷7.2-612.3X+17.5X=2340.68 ×1.9+0.32 ×1.9145+65=X-1/3X46X-24=1523XX=232X+ 5=570%X + 20%X

11、= 3.6X× 3 =20× 15425%+10X=45X-15%X=68X 3 X12185X3× 5 52172 X÷ 1 123 46X5 =13.43 X134483X=38X÷2=7716X 7 X=3844X6× 2 =2312 35 ÷X=103 X= 255728X =1×169651X÷6 =26× 133545254x3 ×9 = 291 x +1 x = 4263 X21× 2 =4103x 1 x 2042( x2.6)86X5 =13.42135 X

12、- 3 X=1046385X=15198 X= 42115415X÷=2 X÷ 1 =123 43 X=255728 X=1 × 169 651X÷ 6 =26÷13354525X-0.25= 14X =30%44+0.7X=1022 X+1 X=423 2X+1 X=1054X- 3 X=4008X-0.125X=836 = 3X43X+7 X=181313X×( 6+ 8)= 12x0.375x= 57X1461025x× 2 + 1 =4× 31X332824X 3 X125 X10795 X2.4 ×581806X330332.2X 1100.36 ×5-4 x =5X0.8X 1023 (x- 4.5) = 715X&