人教版六年级数学下册计算题总复习(重磅推荐)92
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人教版数学六年级下册计算100题【数学六年级下册计算100题】一、简答题(每题2分,共计20分)1. 9876 - 4321 = _______2. 6532 + 4719 = _______3. 5000 + 600 + 70 + 9 = _______4. 509 - 308 = _______5. 4500 + 590 = _______6. 3806 - 2932 = _______7. 3627 + 2549 = _______8. 679 - 209 = _______9. 8900 - 2367 = _______10. 540 + 86 = _______二、填空题(每空2分,共计20分)1. 17 × 3 = ______2. 238 ÷ 2 = ______3. 456 + 300 = ______4. 467 - 125 = ______5. 256 × 6 = ______6. 1300 ÷ 2 = ______7. 289 - 164 = ______8. 75 × 4 + 23 = ______9. 376 ÷ 4 = ______10. 108 + 361 = ______三、计算题(每题4分,共计40分)1. 2583 + 6325 = _______2. 783 × 9 = _______3. 5794 - 439 = _______4. 678 × 3 + 456 = _______5. 2700 ÷ 9 = _______6. 3718 - 1463 = _______7. 529 × 4 = _______8. 2800 ÷ 8 = _______9. 6487 - 5492 = _______10. 956 × 7 + 864 = _______四、应用题(每题6分,共计20分)1. 小明一共有3700元钱,买了一本书花了298元,买了一部手机花了816元,剩下的钱还能买一本书吗?如果能,还能买多少本书?2. 一包纸巾有500张,小红用掉了123张,小明用掉了274张,剩下的纸巾还有多少张?3. 一个教室里有36张椅子,其中的一半被搬到了另一个教室中。
六年级数学计算题训练一、六年级口算练习题21×21=32×43= 12×32=41+3= 54÷21= 98÷4=45×54= 5÷65= 32÷32=41÷31= 1132×2=265×13= 65×52=83÷3= 136×21=21÷52= 15÷6= 65÷5=95×18=76÷56= 226×21=76×2= 53×21=71÷21= 24÷32=83×54=285+84=59×32=118÷8=41+31= 53×15=21+43=43×32= 314×71=30÷75=98÷4=33-9=87-43=32÷23=31×27= 54×3= 54-107=41×8= 441+3=46÷72= 40÷65= 43÷0.1= 26×1312= 38÷38=125×8=6×71=107×75=32×32=76+6= 52×21= 98×4= 0.5-41=4514×2115= 100÷32= 88÷322= 121+21= 14×43= 12÷32= 125×4=110÷85=31÷4= 45×54=1517×60=5812×3629=12÷31=43×8=223×11= 10÷75=76×32= 21÷32= 53×32=45×512= 20×65= 26÷0.5= 4.1÷2= 22×112=421×74= 21÷2=75×32= 35-43=185÷1= 12÷43= 31÷35=72×32= 28÷314=40×61=32×21=54-21=65×87= 24×5=98÷98=92×63=65-32= 41-32= 9÷43= 25×4=67×35= 21÷31= 21×31= 21÷103= 54÷21= 98÷4=45×54= 5÷65= 32÷32= 41÷31=132×2=265×13= 65×52= 83÷3= 36×21= 21÷52= 5÷6= 65÷5= 95×18= 76÷56= 26×21=76×2=53×21=71÷21= 24÷32=83×54=85+84=59×32= 118÷8=41+31=53×15=21+43= 43×32=14×75= 1÷75=98÷4= 3-1.95=87-43=32÷23= 31×27= 54×3=54-107=41×8=41+3= 6÷72=0÷65= 6.3÷0.7=26×1312= 38÷38= 125×8= 1-32= 9÷43=52×21=98×4=0.5-41=4514×2115=6×71=107×75=32×32=76+6=52×21= 98×4= 0.5-41= 4514×2115= 100÷32=88÷322=21+21= 4×43= 12÷32=25×4=10÷85=31÷4= 45×54= 1517×60=5812×3629= 12÷31= 43×8=223×11= 10÷75=76×32= 21÷32= 53×32=45×512= 0×65= 6÷0.5=8.4÷4.2= 5×112= 421×74= 21÷2=75×32= 5-43=185÷1= 12÷43=1÷35= 72×32= 28÷314= 0×61=32×21= 54-21= 65×87= 24×5= 98÷98=92×63=65-32= 1-32=9÷43= 58×45= 0.25×3×4= 21+21= 32×43= 2+32=61×3= 54×21=98×4= 45÷45= 5÷65=32÷32= 41÷21=132÷2= 245×8= 45×53=85÷5=36×31=21÷52=12÷9= 25÷5=125×18=76÷56=38×21=176÷3=53×21=71×21= 12÷32=165×54=83+21=53×92= 158÷8=41×31=53×15= 21÷43= 43×32=34×173=1÷43=41÷4= 5-2.57=1-43= 32×23= 32×15= 56÷3=54-107= 61×8=41+3= 6÷72=0÷1.02=5.4÷0.09= 39×1312=58×45= 0.25×3×4= 83×516= 0.875×716=94×83= 35÷5= 0÷38= 74-32=72×2= 127×4= 4÷163= 12×49 = 875÷5= 12×916= 32×3= 8÷49= 35÷53= 125×4= 4÷316= 27÷49 = 875 ÷5= 18×916= 32×3= 8÷49= 35÷35= 54×85= 97×79= 2.4×50= 94×3= 5÷31= 21÷31= 72×93÷72= 2521÷42= 54×43= 8.7×0.2= 4×0.25= 71×14= 32÷65= 1.25×8= 35÷85=76×23= 6×1.2= 114÷4= 94×83= 35÷5= 0÷38= 74-32= 72×2= 4÷163= 12×49= 32×5= 85×316=83×516= 0.875×716= 92+95= 1-76= 53+54= 107-103= 45×54=1517÷31= 67+35= 21-31= 21+31= 21-103= 21÷21= 18×32= 41×3= 32×32=41×31= 65÷52= 83+21= 21×52= 15÷12=65×12= 95÷5= 76×56= 28×21=76×14= 53×21=71÷21= 24×32=83÷54= 85-84=59÷32= 118÷8= 41+31=21×43= 43×32=2×75=98×3= 87÷43=32×23= 54×20=54-107= 41×36=41+1.25= 6×71= 107×75=52÷21= 2÷32= 33÷322=21×43= 32×4=85÷31= 152+153= 7÷1.4= 53÷0.6= 1.25×54×8=54-31= ( 31+41)×12= 83×52= 43×83=1211-65+121= 3+43-3+43= 3.2-21= 92×81=78+216= 85.2-3.25=21+31= 241×2= 0.99×9+0.99= 49×271= 2= 82.5-3.25= 107÷7=121×8= -3141= 5-75= 274×169= 2-32×2= 12 - 16 = =+5373 1517÷31=45×54=53+54= 43+51= 12-83=54×23= 125×3 = 109÷53 = 35÷85= 95×15 = 0÷38= 74-32= 72×2=1.21×21= 2.32×43= 3.12×32= 4.41+3= 5.54÷21=6.98÷4= 7.45×54= 8.5÷65= 9.32÷32= 10.41÷31= 11.132×2= 12.265×13= 13.65×52=14.83÷3=15.36×21= 16.21÷52= 17.5÷6= 18.65÷5=19.95×18=20.76÷56= 21.26×21= 22.76×2= 23.53×21=24.71÷21= 25.24÷32=26.83×54=27.85+84=28.59×32=29.118÷8=30.41+31= 31.53×15=32.21+43= 33.43×32=34.14×75=35.1÷75=36.98÷4=37.3-1.95=38.87-43= 39.32÷23=40.31×27=45.6÷72=46.0÷65= 47.6.3÷0.07=48.26×1312= 49.38÷38=50.125×8= 51.0×61= 52.32×21= 53.54-21=54.65×87= 55.24×5=56.98÷98=57.92×63=58.65-32= 59.1-32= 60.9÷43= 1.6×71= 2.107×75=3.32×32= 4.76+6= 5.52×21=6.98×4=7.0.5-41=8.4514×2115= 9.100÷32= 10.88÷322= 11.21+21= 12.4×43= 13.12÷32= 14.25×4=15.10÷85=16.31÷4=17.45×54=18.1517×60=19.5812×3629=20.12÷31=21.43×8= 22.223×11= 23.10÷75=24.76×32= 25.21÷32=26.53×32=27.45×512= 28.0×65= 29.6÷0.5= 30.8.4÷4.2= 31.5×112= 32.421×74= 33.21÷2= 34.75×32= 35.5-43= 36.185÷1= 37.12÷43=38.1÷35=39.72×32= 40.28÷314= 41.0×61=42.32×21=43.54-21=44.65×87=49.1-32=50.9÷43= 51.41×8= 52.41+3= 53.24÷32=54.83×54=55.85+84=56.59×32=57.118÷8=58.41+31= 59.53×15=60.21+43= 3.6÷0.36= 7÷14= 1-52+53= 1+41= 1×41= 1÷41= 1-41= 37×5= 9-0.9= (41+31)×24= 72×0.4= 72÷0.4= 24×43= 0.2-51= 1+23×32= 25×24=4.2÷0.2= 12-0.2= 1.25×8= 3÷8=10÷0.1= 0.8×12.5= 8.1÷0.03= 1 .5×0.5=10÷0.5= 0.5÷10=152+153= 7÷1.4= 72.8÷0.8= 53÷0.6= 1.25×54×8= 54-31=10-0.9=1211-65+121= 83×52= 3+43=26.26÷26= 4.57+6.43= 7.9×11-7.9= 3.14×32=10.1×30= 2÷0.2-2=43×83= 1.8×4×0.5= 3.2-21= 92×81= 21+31= 241×2=49×271= 0.99×9+0.99= 3141= 5-75= 107÷7= 7.25+2.75= 9.8÷98= 0.125×9×8 = 121×8+121×2= 274×169= 2-32×2= 59 ×6=二、脱式计算 (1–61×52)÷97 71÷32×7 25÷(87–65) 158+32–431211–(91+125) 254×43–501 (65–43)÷(32+94) 51×[31÷(21+65)]12÷(1–73) [(1–61×52)÷97 [(1–53)×52]÷4 三、用简便方法计算: (51–71)×70 97×965 53×8+53×2 15×73+15×74(98+43–32)×72 72×(21–31+41) (95+131)×9+134 30×(21–31+61)4–52÷158–41 48×(31–21+41) (53+41)×60–27256÷9+256×98 24×(61+81) 5–61–6598×(9+43)–32 87÷32+87×215–61–6554+85÷41+21 2–98×43–31 87+32÷54+6130×(61+52–21) 10÷101110+24121÷12 54×31+5.2×31+1÷43(1) 37 ÷74 +37 ×37(2) 711 ÷[25 -(1-710 )](3) 813 ÷6+16 ×413(4) 48×( 18 +316 +524 )(5) 74 ×4.6-134 ×3.6(6) 414 ÷[( 12 +0.75)×1.2]-256(7) (16 +34 )÷512(8) ( 12 - 13 ×75%)÷0.25(9) ( 34 - 58 )÷( 12 - 13 )(10) (100-9)×( 17 - 113 )(11) 115 ×( 13 + 112 )÷ 112(12) 62.5%×3+0.625×7+ 58 ×6(13) 59 ×56 +49 ÷65(14) 59 - 311 + 49 - 811(15)[ 56 -( 110 + 16 )]×1517(16) (17×49 + 59 ×17)÷34(17) 925 -(337 +0.4)(18) 7.8×15 +2.2×20%(19) 34.7-715 +65.3-815(20) (34 +116 -1324 )×12(21) 712 ×[34 -(1120 -12 )](22) 23 +( 45 -23 )×53(23) 25 ×67+33×25(24) 12÷[56÷(310+920)](25) (12.5×8-40)÷0.6(26) 34+2917+14+3817(27) 3.4×2.77+0.23×3.4(28) 74×4.6-134×3.6(29) 414÷[(12+0.75)×1.2]-256(30)711÷[25-(1-710)](31)76×314-15×37+23(32) (16+34)÷512(33) (34-58)÷(12-13)(34) (100-9)×( 17-113)(35) 85÷215-119-79(36) [ 56-(110+16)]×1517(37) ( 12-19+13)÷136(38) 115×(13+112)÷112(39) 62.5%×3+0.625×7+58×6(40)59×56+49÷65(41) (17×49+59×17)÷34(42) (12-13×75%)÷0.25(43)813÷6+16×413(44) 48×( 18+316+524)(45) 849÷[98-(37+18)](46) 9×( 49+114)+514(47) 1516÷(512÷58+38)(48) 17×913÷514÷313(49) 719×13+1319×31(50) (251+518)×9×17(51) (524+712-23)×48(52)0.25÷7+17×34+67(53)18÷(2-25%-34)(54)718÷4+34×718(55) 98 ÷[(25 +110 )×34 ](56) 78 ÷9×35 ÷3572(57)25 ×518 +25 ×1318(58) 12÷( 56 -13 )-20 (59) ⎪⎭⎫ ⎝⎛+-1352171013511(60)1456.0531495⨯+⨯12519322⨯⨯433712217÷÷641321161814121+++++5351431.1152⨯+⎪⎭⎫ ⎝⎛-÷741741741741÷⎪⎭⎫ ⎝⎛-÷⨯2111227713317713÷⨯⎪⎭⎫ ⎝⎛-⨯742321473332157423130⨯-⨯+⨯⎪⎭⎫ ⎝⎛-÷⎪⎭⎫ ⎝⎛+311652311652⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛÷-⨯÷15148.255138.12433712217÷÷4213012011216121+++++742321473332157423130⨯-⨯+⨯431872395⨯-÷5351431.1152⨯+⎪⎭⎫ ⎝⎛-÷1456.0531495⨯+⨯741741741741÷⎪⎭⎫ ⎝⎛-÷⨯2111227713317713÷⨯⎪⎭⎫ ⎝⎛-⨯⎪⎭⎫ ⎝⎛-÷⎪⎭⎫ ⎝⎛+311652311652⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛÷-⨯÷15148.255138.12777×9+1111×3(13 ×67 - 114 )÷1415117 - 87 ×58 + 514【12 -(34 -35 )】÷71046×8-120÷15(12.5×8-40)÷0.635)3254(32⨯-+1-(16 +17 )×233.6÷8+33.6÷871.25×615 +3.8÷4518÷[65+(85-31)]21.6-0.8×4÷0.8×4 353×3.7+3.6+5.3×353375+450÷18×2510÷2.5+0.5×0.34.15-3.75×10%-5 851+(2304-2042)×23 4215+(4361-716)÷81 (247+18)×27÷2536-720÷(360÷18)1080÷(63-54)×80 (528+912)×5-6178 8528÷41×38-904 264+318-8280÷69 (174+209)×26- 9000 521-21×12+88 1156÷17+5040÷4253-(15+5×3)90-90÷15+6610-714÷21×15 338+2108÷34-292 (82-936÷78)×151305-(760+240÷40)(4076-114×15)÷91 (628+830)÷(307-289)9405-2940÷28×21 920-1680÷40÷7690+47×52-398148+3328÷64-75 360×24÷32+730 2100-94+48×54814-(278+322)÷151406+735×9÷45 3168-7828÷38+504 3643-74+6357-764.7×5.9+5.2×4.7-4.7×0.1 796-5040÷(630÷7)285+(3000-372)÷36546×(210-195)÷3037.5+19.5÷2.5×42316]43)3121(85[÷⨯+-18 +57 +6.875+271514÷[(54+32)×1110]65×56-109÷59(512 +338 -61112 )×1247 ÷116[0.75+(5.4-256 ) ×1411 ]÷81218.09×[(1.5+223 )÷3.75-23 ]18.09×[(1.5+223 )÷3.75-23 ]0.84÷0.3÷(1.96×18.9) 1325+540÷18×15 178-145÷5×6+42 240÷40×5420+580-64×21÷28 5×(825-115÷23)21×(376-376÷8)(143+429÷13)×24 178-145÷5×6+42 120-36×4÷18+3585+14×(14+208÷26)812-700÷(9+31×11)1025-1125÷4.5×3.6直接写出得数。
六年级下学期数学部编人教版计算题专项重点知识题型班级:________ 姓名:________ 时间:________ 1. 计算题。
(下面各题怎样算简便就怎样算)①0.125×97+57÷8 ②87×386③815×[56÷(79-13)] ④x-15x=23÷17182. 解方程。
1 5x=18 x-34x=3.212+2x=1710×53 4x+16x=11120.8x+3.6x=1.32 4x÷35=103. 解方程。
3241 x x++()=()11 2222x xx+++﹣=x-37.5%x=200 90%x-35%x=110 x+20%x=60 2.5x+50%x=1.83x-120%x=1.8 60%x+x=484. 解方程。
5. 解方程,并验算。
6x-32=16 2x+8=19 5y+25×3=807x+2.5×4=45 4x+3×6=72 y÷4-8=1.2 6. 下面各题,怎样简便怎样算。
12.5×25%×32 35-[(56-23)×3]5339911114⨯+÷7. 解方程。
120%x=720 x-80%x=80 4+12x=18x-25%=50% (1-3.5%)x=1.93 20%x-=7.5 8. 解方程。
2 3X ÷ 40℅=60℅ 25℅X+15X =342 3x+50%=1.7524:0.833x=9. 解下列方程。
(2+ 15)x=3334-2x=124.7x=12.32-3x 4(x +3)÷2=1042( 3.2)53x += 2239x x -=10. 解方程或比例。
151436x x += 50%3052x -= 3:72:0.17x = 524:35x =11. 用自己喜欢的方法计算下面各题。
小学数学计算训练题集锦 人教版六年制小学数学六年级下册一、口算0.844.8+6.2= 0.84÷0.21= 16×12.5= 6.9×11-6.9= 1.28÷0.4= 8.3÷2.5÷4= 7.8-0.98= 3.2+6.8÷10= 51+54= 43-41= 52×2= 73×31= 95×53= 94÷4= 53÷51= 12×43= 2521÷42= 21×32= 71×14=114÷4= 13+56 =18 ×4=0.4÷25 = 0×113 = 12×56 = 5-35 = 4÷15 =27÷23 =35 × 12 =12 ÷3 =4 ÷ 25 =13 + 0. 5=34 ×1. 2=8. 1÷145 =2.6- 4710 =390×0 .02= 45 - 13 =(18 + 14 )×16= 26÷91 = 9 35 ÷3 =14÷ 35 = 4 16 -(12 + 16 )= 3 .25×4= 14 +25 +234 = 2 13 - 15 =(23 + 12 )×12=0 .9+99×910 = 103×125= 1÷115= 21÷60%= 125×15= 65-21= 6.8÷10%= 4.5+21= 83×32=578+216= 18.25-3.3= 3.2-21= 91×8.1= 21+31=241÷3= 0.99×9+0.99= 241×271= 121×8+121×2= 21107÷7= 878⨯= 5141-= 6.025.1⨯= 7.0997.0+⨯=9763÷= 5341+= 5210965⨯⨯= 213213⨯÷⨯= 24)61127(⨯-= 2.38.19--= 27 ×2 = 35×1 = 34 ×13= 12×34 = (23)3= 528 ×7= 45 ×47 =5-37=7 24×314=1 6+56×15=5÷15=6×17=4 5÷78=5 18 -29=45×34×13=3 4÷12×6=(17+18)×56=10÷110×10=11 26×1322×4=6 7×2÷67×2=34×25=6 7÷2 =27×14=23÷37×0=25×4 +25=7-613=109÷98=10×45=4 ×17×34=34×4÷34×4=21+21=21×31=31-41=32÷51=53×32=75÷75=53× 5 =5÷31=5.4+8=9-232=9÷2927391×18=3.75+141=232÷4=9.625-85=153×1.5==52435243⨯÷⨯(1-1.2÷131)÷516÷43=43×10% =43×8 =15÷1%=1.05-21=32÷23=(41-51)×201=43×65÷65×43=13+56=18×4=0.4÷25=0×113=12×56=5-35=4÷15=27÷23=51+54=43-41=52×2=73×31=95×53=94÷4=53÷51=12×43=2521÷42=21×32=71×14=114÷4=0.844.8+6.2=0.84÷0.21=16×12.5=6.9×11-6.9=1.28÷0.4=8.3÷2.5÷4=7.8-0.98=3.2+6.8÷10= =⨯4045=⨯73157=+3195=÷8.02.3=÷3298 =-741=÷741=÷430 =-5131=⨯3243 =-170410=⨯158165 =÷595=⨯3.02.0二、脱式计算:37×14÷34 (25+23 )×4(15-14×47 )÷82151+94×83+85(21+31)÷(1-83) 5÷(21+61)×15221+8÷94×121 10÷52-43×92(31+54÷2)×116 43÷21-65×5479 + 12 ÷45 + 38 813 ÷7+17 ×613 12 -425 ÷25 +14[(4+23)÷52]×125311 ÷[25 +(1-1011 )](45 +14 )÷73 +71041÷(85+83×58) (9×32-4)÷545.3+2.55÷1.73.61÷(7.2—5.3)×25(14.4-4.8+3)÷0.4 [58.8÷(6×0.07)+1.5]×0.485×6+4÷521613+(167-41)÷2132+(74+21)×257(21-31)÷61+657×143+83÷31(1-21)÷(1+21) 9×91÷9×91121+54×41-5194÷[54-(61+31)] (4-27×32)÷9103.68×[1÷(2.1-2.09)]1.75×52+354 1.5×214+171÷15385.07-(15.3-4.8)+5.369 40-(3.5-2.75+0.86)37×25+268÷67 (32+360÷45)×72(7590÷33-14)÷54412÷(607-36×14)13.7+0.98+0.02+4.318.54-9.9 18.6-3.47-0.533.25-0.84-1.1619.75-6.45-3.550.55+50.55-2.45-9.55 1.5×1.4+5.8÷0.8360÷[56×(73-83) 25×31×52×103 [1-(21-41)]×52(0.75+0.2)÷0.25×25%61÷[1÷(53-103)10.6-(6.6+0.125÷12.5%) (80-9.8)×0.6-2.121110÷[56×(73-83)(32+152)×4598×[43+(167-41)]36.5÷3.65-0.36×1.21000÷250-340×0.389×0(21+125÷61)×1114(2025-2025÷9)×251183×112-207÷1450202÷18×20-184×25 4.8×(11.03-15.6÷7.5)231+(5.4-232)÷53 10-[(21+31)÷65]×1.2150-120÷1.6×0.842.7÷(21+3÷7.5)101.1-25.9+5.1÷0.85(285-41)×(98÷131)2-3÷8-81÷2(38×25-849)÷0.25252×65-1÷13216×45+99×1001×0210.5+(6.05-3.35)÷1.5(8-4.6)÷(2.4+153) (31+41)×(73+21)29×19+28×81 2.3×6.2-21÷553×34+52÷54257)2174(107⨯++ [1-(8341+)]÷4183)89169(÷+ 4818125⨯⨯÷ 54)4365(512++⨯ (31-41)×(32+43) (107+ 54÷34)×135 1-21÷87×53 61÷[43-(51+31)]3.5×4+3.6÷9165×31×53÷152 (65-43)×52÷218320+4500÷18308×16-14874÷37(331+43-285)×151 3.5÷85×158 434173÷⨯⎥⎦⎤⎢⎣⎡⎪⎭⎫ ⎝⎛+÷⨯5110365211-(98323198⨯+⨯) ⎥⎦⎤⎢⎣⎡-÷⨯)20151(14336 × ()431879465-+- 9-920 ÷9 712 ×37 ×562.4-2.4×47 ― 37 49 ÷25 +59 ÷253×(215 +112 )-25 15 ÷[(23 +15 )×115 ]217 + 118 × 59 + 38 150 +(2 – 0.47 )×3209.24.02.32.12-÷+)]31115(229[183-÷÷ 三、简便运算:30×(61+52-21)256÷9+256×98 134×51+139÷56-125×109-81313-75 -8565 × 38 +58 ÷ 56 13 ×125 -13 ×25139 ×17+139 24×(78 +56)43 × 27 + 57 ÷ 34 10 - 719 - 1219 + 11988×(38 + 144 )14-710 ÷73 -71057 ×114 +534 ×5730×( 45 -12 +16 )3.4×12.5+6.6×12.54.3×9.974+61+73+6113-127-125 76×65×87×5112.56÷4÷3.1428×(41+71-143) 127-(41-125)99×98+0.2×99045÷3+47×31 (72-92)×1125-23×2110-72(1-21-41)÷8113.7+0.98+0.02+4.3 286+199 18.54-9.918.6-3.47-0.53 36×99 72×101-72235×28-35×282.6×78+78×7.4 5436÷180.98+0.39+9.02125.7-(56+5.7)18.6-9.3-3.6-1.7 1.98+2.45+0.02+1.5519.8+24.5+0.2+15.512.45+78.98+7.55+0.0223.56+8.58+6.44-3.58 8.86+6.27-0.14-14.731.56-(1.66-1.44)-1.344.9+5.1-4.9+5.1 3-58-0.98+0.0237.5+13.9+22.5+26.1 4.7-0.23-0.52-0.25 368.73-5.72-68.73-4.2813.61+9.28+6.39+0.72 14.237-0.15-6.85-1.2375.83+6.74-5.74-1.83 25.6-(0.23+5.6)45×36+64×45 1.25×320×25 0.96×259.9×999+9.91.08×125 8×25×1.25×16 489×101-489 33×1.03 28×45+30×13 5.6×9+56 0.98×541.46×52+2.5×520.125×32×2.5 4.6-2.147+5.4-7.853 807×99+8070.6+3.1+5.4+6.974×1.8+19.2×74 6.13-32-31+0.871.5×54+0.8×6.5+2×54(245+127-32)×48 18209÷95.6×99+5.612.5×0.25×3218×(91+31-61)4.38-1.56+0.62-0.44 9.9×6.9-6.9×3.954×311+54×3121 143×185+283×143 1021-0.35-0.6525×1.25×322.6×31+253×32402×324.7+56+5.3+4424×(31+41+61) 7-74-732.74×75+4.26×757.2÷1.25÷8145×5+9×14519.9+19.9×9920×(54+107-43) 5.39+72+3.61+17512×(31+21-61)3.14×52+53×3.14270×0.4×2×2.5×0.595×38+62÷951( 78 + 1316 )÷ 131676×51+71÷5 (94+231)×9+231445 -(52+51)+51 四、怎样简便就怎样算。