第一篇:五年级上册速算练习题
一、口算
2.5÷5= 0.012×100= 0.005×40= 50÷0.01= 7.5×200= 32.08+0.07= 7.005-3.58= 5÷0.005= 1.8÷9= 0.18÷0.9= 0.75+10.05= 78÷0.01= 9.6÷0.1= 8.05÷0.1= 0.1÷0.01= 0.023×1000= 41×100= 8800÷400= 0.12×10= 600÷30= 7.59÷100= 50+70= 356-98= 125×8= 0÷3.5= 10×10.002= 5.06+0.56= 61.21-5.22= 25.25-0.251=3÷0.5= 10÷25= 4.8÷0.16= 0÷3.89=1.5÷0.3= 1.8×5= 7.2÷0.9= 8.4÷0.4= 0.9×0.3= 1×0.06= 9×0.5=
二、用竖式计算:
0.37×2.4= 1.55÷3.8≈ 56.5×0.24=(保留一位小数)
93.6÷0.052= 0.59×0.027= 6.72÷6.4=
0.59×0.027= 6.72÷6.4=1.24×0.15=
0.39÷7.8= 1.03×5.9= 3.8÷4.5≈
(得数保留两位小数)
0.86×1.2= 5.63÷6.1≈ 7.6×0.9(得数保留两位小数)
10.5×0.3 4.25×0.180.3÷0.12(得数保留一位小数)
104.78÷26 34.2÷0.8
得数保留一位小数(本题验算)
3.5×16= 0.19×7.5=(验算)
227.8÷0.34= 7.525÷0.38=(得数精确到百分位)
78.6÷11=(得数用循环小数表示)
36×5.5 18×3.06 3.45×21
0.28×0.25 150×0.12 0.87×1.5
0.03÷0.12= 验算: 52.78÷26= 1.86×0.47 3.81÷7(得数保留两位小数)5.87÷1.9(得数保留两位小数)
0.4×0.076 1.5×0.062 6.5×0.04
二、递等式计算,能简便的用简便方法计算。
5.5×8.2+1.8×5.5 0.25×0.89×4 4.8×0.98 8.8×1.25 7.65÷0.85+1.1 23.4÷5.2×3.2 2.35×4.64+5.36×2.35 12.5×1.36×0.8 2.6×10.1 4.4×0.25 25.2÷12+2.9 43.5÷15-1.45 1.87×3.05+8.13×3.05 1.25×0.45×0.8 9.8×3.7 0.44×2.5 2.25×0.4+0.6 31.04÷3.2-4.7 3.26×10.1-0.1×3.26 0.125×9.8×8 102×4.8 2.4×2.5(27.8-15.6)×0.8 9.12÷57+4.84 12.6×99 90÷25÷42.5×6.8×0.4 1.39×6.1+3.9×1.39 0.25×1.6×0.4 10.1×1.9 2.4×1.25 0.48×20.2-4.2 42.72÷0.48+0.52 1.2×2.5+0.8×2.5 2.33×0.25×4 102×0.45 8.8×1.25 7.06×2.4-5.7 8.7×10.1 2.5×3.2×1.25
第二篇:巧算速算练习题
巧算速算练习题
1.计算2011×990+2011×11=_____。(第九届走美杯三年级初赛)★
2.2012×9+2012×8-2012×7=_____。(第十届走美杯三年级初赛A卷)★
3.计算23×98-37×23+23×38+23=_____。(第十一届走美杯四年级决赛)★
4.计算25×13×2+15×13×7=_____。(第十五届中环杯三年级决赛)★
5.算式5×13×(1+2+4+8+16)的计算结果是_____。(2015年数学花园探秘中年级组决赛)★
6.计算2011-(9×11×11+9×9×11-9×11)=_____。(2011年数学解题能力展示中年级复赛)★★
7.在下面的□中填入一个相同的数字,使算式成立。
97+□×(19+91÷□)=321, □=_____。(第十三届小机灵杯三年级决赛)★★
8.计算2×(999999+5×379×4789)=_____。(第十三届走美杯上海赛区三年级决赛)★★
9.计算13+73+132+145+255+274+326+368+427=_____。(第十四届中环杯三年级选拔赛)★★
10.计算2015-123-125-127-129-131=_____。(第十三届小机灵杯三年级初赛)★★
11.计算1+3+5+7+…+97+99-2014=_____。(第十三届走美杯三年级初赛)★★
12.101-99+97-…-7+5-3+1=_____。(第十一届走美杯三年级决赛)★★
13.计算2014-37×13-39×21=_____。(第十四届中环杯三年级决赛)★★★
14.123×8+82×9+41×7-2009=_____。(第九届小机灵杯三年级决赛)★★★
15.计算2009+2005+2001+…+1-2007-2003-1999-…-3=_____。(第十届中环杯三年级选拔赛)★★★
16.计算2012-2011+2010-2009+2008-2007+…+4-3+2-1=_____。(第八届新希望杯三年级初赛)★★★
17.计算1+2-3+4+5-6+7+8-9+…+601+602-603+604+605-606=_____。(第六届中环杯四年级选拔赛)★★★
18.1-(1+3)+(1+3+5)-(1+3+5+7)+…-(1+3+…+47)+(1+3+…+49)=_____。(第十届小机灵杯三年级初赛)★★★
答案
(速算与巧算)
1.【答案】2013011
【解题思路】2011×990+2011×11=2011×(990+11)
=2011×(1000+1)=2011000+2011=2013011
2.【答案】20120
【解题思路】2012×9+2012×8-2012×7=2012×(9+8-7)=2012×10=20120
3.【答案】2300
【解题思路】23×98-37×23+23×38+23=23×(98-37+38+1)=23×100=2300
4.【答案】2015
【解题思路】25×13×2+15×13×7=13×(25×2+15×7)=13×(50+105)=13×155=2015
5.【答案】2015
【解题思路】5×13×(1+2+4+8+16)=65×(10+20+1)=650+1300+65=2015
6.【答案】130
【解题思路】2011-(9×11×11+9×9×11-9×11)=2011-9×11×(11+9-1)
=2011-9×11×19=2011-1881=130
7.【答案】7
【解题思路】97+□×19+□×91÷□=321
97+□×19+91=321
□×19=321-97-91
□=133÷19
□=7
8.【答案】20150308
【解题思路】2×(999999+5×379×4789)=2×(1000000-1)+2×5×379×4789=2000000-2+10×379×4789=2000000+(18150310-2)=2000000+18150308=20150308
9.【答案】2013
【解题思路】13+73+132+145+255+274+326+368+427=13+(73+427)+(132+368)+(145+255)+(274+326)=13+500+500+400+600=2013
10.【答案】1380
【解题思路】2015-123-125-127-129-131=2015-(123+125+127+129+131)=2015-[(123+127)+125+(129+131)]=2015-(250+125+260)=2015-635=1380
11.【答案】486
【解题思路】1,3,5,7, …,97,99构成一组等差数列,项数为(99-1)÷2+1=50,因此1+3+5+7+…+97+99的和为(1+99)×50÷2=2500,2500-2014=486。
12.【答案】51
【解题思路】101-99+97-…-7+5-3+1
=(101-99)+(97-95)+…+(9-7)+(5-3)+1
==51
13.【答案】714
【解题思路】2014-37×13-39×21
=2014-(37×13+13×3×21)=2014-13×(37+63)
=2014-1300=714
14.【答案】0
【解题思路】123×8+82×9+41×7-2009
=41×3×8+41×2×9+41×7-2009
=41×(24+18+7)-2009
=2009-2009=0
15.【答案】1005
【解题思路】2009+2005+2001+…+1-2007-2003-1999-…-3
=(2009-2007)+(2005-2003)+
(2001-1999)+…+(5-3)+1
=+1=2×502+1=1005
16.【答案】1006
【解题思路】2012-2011+2010-2009+2008-2007+…+4-3+2-1
=(2012-2011)+(2010-2009)+(2008-2007)+…+(4-3)+(2-1)
=
=1006
17.【答案】60903
【解题思路】1+2-3+4+5-6+7+8-9+…+601+602-603+604+605-606
=(1+2-3)+(4+5-6)+(7+8-9)+…+(601+602-603)+(604+605-606)
=0+3+6+…+600+603=3×(1+2+…+200+201)
=3×(1+201)×201÷2=60903
18.【答案】325
【解题思路】把原算式的顺序颠倒过来,即从右向左重新排列,带着符号搬家:
1-(1+3)+(1+3+5)-(1+3+5+7)+…-(1+3+…+47)+(1+3+…+49)
=(1+3+…+49)-(1+3+…+47)+(1+3+…+45)-(1+3+…+43)+…+(1+3+5+7+9)-(1+3+5+7)+(1+3+5)-(1+3)+1
==(49+1)×13÷2=325
第三篇:五年级上册口算练习题
五年级第九册口算练习
4.7+2.3=
4.5×2=
6.9-2.5=
7.2×0.8=
6×3.4=
0.62-0.32=
1.4×0.5=
0.75×100= 0.02×0.5=
3.6÷0.3=
6.3÷7=
5.6÷100= 0.75÷0.25=
0.125×8=
4.8÷0.3=
0.96÷2= 0.56÷28=
0.36÷0.4=
0.64÷0.8=
0.72÷3.6= 3.6÷24=
0.8×1.1=
7.2+12.8=
46.7-3.8= 12.8÷4=
5.2÷13=
12.5÷5=
1.64÷41= 10÷20=
24÷15=
8.65×10=
0.35×0.6= 3.08×0.01=
2.4÷0.8=
4.95÷0.9=
0.56÷0.7= 7.2×0.1=
1÷2.5=
0.22×102=
4.95×1000= 10.8÷9=
9.65÷0.1=
0.125×4=
0.01×0.1=
1.25×0.8=
9÷0.25÷4=
6.9×0.1=
0.4×0.5= 9.6÷0.8=
0.108÷2= 0.325×100=
2.5×8=
3.28×0.1=
3.9÷0.13= 0.25×0.4=
1.6÷0.8= 3.2÷0.04=
0÷1.7=
0.25×3.97×4=
(1.2+8.8)×0.4=
第四篇:六年级数学口算速算练习题
六年级数学口算速算练习题
(一)1.4+0.3=
2.6-0.7=
0.64+0.36=
3.24-2.14= 0.9+4.8=
22.2-2=
1-0.06=
22.4+0.06= 2.1-1.2=
3.45-1.9=
5.2+3.4=
1.2-0.6= 4.5-0.9=
5+7.7=
0.6+0.45=
5.6-1.4= 4+6.4=
0.83-0.12=
0.7-0.07=
5.1+0.18= 5.3-0.7=
4.8+3.2=
5.67-5.67=
5-0.38= 0.04×1.5=
0.4×25=
8.1×6=
0÷3.5=
3.4-1.4=
0.68+0.42=
0.89-0.25=
10.3×2=
2.01×0=
0.7×4=
2.3×4=
2.6×3=
1-0.08=
3.9+0.39=
3÷6=
3.6+6.3=
0.9×0.3=
2.6×3=
0.9×0.3=
0.18×3=
0.15×4=
9.6÷12=
1.21÷11=
7.82-7.2=
8.1-5.1=
1-0.98=
5×0.6=
10×0.05=
0.05×4=
3.25×0=
4.1×2=
3.5×0.01=
4.8+5.2=
8.1÷9=
0.05×4=
1×0.06=
4.1×2=
1×0.06=
6.5×0.2=
0.2×0.5=
0.9÷0.3=
0.4×0.5=
2.19+9.1=
0.728-0.24=
1.32×8=
0.9×0.3=
0.13×7=
4×0.3=
0.4×50=
0.35×0.2=
1.25÷0.25=
0.5×0.4 =
2.5×4=
3.5×0=
9×0.5=
0.35×0.2=
9×0.5=
50×0.1= 10×0.52=
6.3÷0.7=
2.5×0.4= 10.1-0.89=
0.8+0.18=
0.7×8=
3.5×0.2= 0.21×100=
12.5×8=
30×0.1=
7.5×0.1=
0×9.8=
4×0.25=
6-0.025=
0÷3.5=
1.25×8=
7.5×0.1=
1.25×8=
(二)0.2×0.4=
8.2+1.8=
100-35.22=
2.5×0.4= 2.4×5=
0.22×4=
0.9-0.52=
3.99×1= 0×3.52=
2.5÷5=
8.4÷7=
0.34÷17= 2.5÷0.5=
8.4÷0.7=
0.34÷0.17=
30.4÷4= 1.2×6=
0.72÷0.6=
2.6÷1.3=
0.6×0.3= 0÷3.65=
7.82÷1 =
0.001÷0.1=
1.4÷0.7= 3.6÷0.06=
5.6÷0.8=
5.6÷1.4=
0.48÷0.8= 4.4÷0.11=
4.2×3 =
3.2×0.4=
0.3÷0.01= 4÷0.5=
9.6÷16=
0.81÷9=
0÷3.89=
1.8×5=
4.5÷0.9=
4.5×2=
6-4.05=
7.86-4015-2.85= 2.14-0.9=
4.9÷3.5=
0.36÷12=
3.9+2.03=
500×0.01=
0.99+1.8=
72.8÷0.8=
1.7+0.43+3.3=
5.1÷0.17=
0.28÷1.4=
1÷0.01 =
0.01÷1=
3÷0.5=
10÷25=
3.52÷1=
6.4÷4=
7.2÷0.9=
2.2×6=
2.5×4=
12.5×4=
7.8+0.22=
3.4×0.4=
8.4÷0.7=
3.67+6.13=
6.4×0.2+3.6×0.2=
6.25×8=
2.87÷0.7=
1.2×0.4+1.3×0.4=
4.2÷3.5=
0.75×4=
8.8÷2.2=
7.5×2.5×4=
1.23÷3=
3.2÷1.6=
64.32÷16=
2.56-0.37=
16÷1.6=
(1.25+0.36)×0.2=
0.9÷0.01=
5.4-2.5-1.4=
12÷0.3=
5.6×1.01=
0.9÷0.45=
7.5÷1.5=
4.8÷0.16=
1.5÷0.3=
8.4÷0.4=
0.3÷0.1=
12.6-0.9=
0.55÷1.1=
(1.5+0.25)×4= 7.2×0.3+2.8×0.3=
2.4×2.5=
0.65×1.02=
0.05×0.8=
3.5+3.5×3=
1.5×0.4=
1.25×0.8×0.5=
99×0.35=
(三)7÷0.25=
4.2÷0.1=
12-6.2-3.8=
0.1×0.02= 3.5+7.6=
6.3+3.7=
25×0.8=
7-1.9-4.1= 12-9.9=
14÷28=
1.6×9+1.6=
3×1.4= 5×1.02=
2.3÷5=
232-195=
350÷50= 12×40=
450-300=
560+80=
7×70= 82-56=
560÷4=
28+37=
26×3= 88÷22=
160×5=
640÷8=
80+520= 720÷80=
670-250=
0×85=
35×5= 707÷7=
510×6=
72÷12=
18×40= 46+0.34=
1-0.78= 9.3÷0.93=
0.54÷18= 0.4+0.4÷0.1=
0.6×1.5= 0.05×1.8=
0.16÷0.4= 1÷0.125=
0.12×3= 7÷0.25=
0.56÷0.28= 6.25×8=
0.25×16= 8.1÷0.03=
5.6×1.01= 0.25+0.75=
1.25×6= 0.55+0.45=
7-1.036= 0.8+0.2-0.8+0.2=
(5.25-4)x8= 8.2÷8.2+8.2=
1.3+0.13= 0.6-0.06=
0.57+0.16= 3.6+6.3=
0.05×4= 0.175÷0.25÷4=
(1.7+1.7+1.7+1.7)×2.5=
640÷40=
3400-900 =
750÷50 =
8.92-0.03-1.97=
2.7×3=
72×125=
0.025×4.4=
7.38-5.88=
9.4+1.6=
0.54÷9=
88÷0.8=
10-8.25=
2.56-0.37=
64.32÷16=
3.2÷1.6=
7.2×0.3+2.8×0.3=
7.5×2.5×4=
12-6.2-3.8=
2.14-0.9=
0.25+0.75=
15-2.05=
1.2-1.2×0.9=
50×0.25=
1.5+2.26+0.5=
4x0.37x0.25=
0.25×0.7×4=
6.3x101=
0.25x400=
0.35-0.18=
3.8+6.2=
3.5×0=
0÷3.5=(12.6-0.75-0.25)÷0.01=
384+98×25×4=
第五篇:五年级速算大赛测试题
小学数学五年级口算、速算竞赛试题 五3 挑战计算极限,争当计算明星!加油
时间:40分钟 班级 姓名
一、直接写出得数(每题0.5分,共20分)口算(每题0.5分,共20分)
3.2×0.5= 25×0.4= 12.5×0.8= 63.6×0.7= 6.5×0.4= 8.5×0.2= 0.662.5×0.4= 7.7×0.8= 0.012×20= 4.63×0.09= 2.2×0.05= 4.1×0.6= 0.7523×0.4= 0.32×100= 5.5×2= 4.730×23.5= 0.25×4= 7.2×0.5= 3.360×0.8= 3.4×0.6= 0.125×8= 17×40= 100-63= 3.2+1.68= 2.8 14-7.4= 0.65+4.35= 4÷20= 3.51.5-0.06= 1.92÷0.04= 0.32×500= 10二,竖式计算
5.4÷0.36=
3.63÷1.1=
1.24÷20= 2.2÷0.11= 585.6÷48= 19.44÷2.7= 80.6418.6÷1.55= 2.002÷0.91= 12.6÷0.8= 175.73.84÷3.2= 337.5÷4.5= 4.48÷1.6= 10.80.396÷1.2= 0.756÷0.36= 15.6×13= 0.180.025×14= 3.06×36= 0.04×0.12= 3.84×6.5= ×0.3= ×0.4= ×0.4= ×10= ×0.5= 135÷0.5= ×0.4= ×200= -5.4=
42÷25= ÷25.6= ÷2.8= ÷1.2=
×15=
×2.6=
7.15×22=
90.75÷3.3= 3.68×0.2 = 16.9÷0.13= 1.55÷3.9= 3.7×0.016= 13.76×0.8= 5.2×0.6 = 8.4×1.3= 6.4×0.5 = 4.48×0.4= 5.25×5=
三、脱式计算。(每题1分,共30分)。
35.49.8÷0.5÷0.2 8.64÷2.7+7.8×1.5 19.44÷2.7÷4.8
175÷12.5×1.4 63÷1.4÷3.6 3.9×1.4÷0.35
37.6-1.5÷0.24 71.4÷3.5÷0.16 1.36÷(2.8-0.08)
9.18÷(0.54×1.7)×4.2 30.8÷[14-(9.85+1.07)]
[60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25×2.4)
2.55×7.1+2.45×7.1 777×9+1111×3 31.5×4÷(6+3)
0.8×〔15.5-(3.21+5.79)〕(31.8+3.2×4)÷5 2÷2.5+2.5÷2
0.64×25×7.8+2.2 194-64.8÷1.8×0.9 36.72÷4.25×9.9
5180-705×6 24÷2.4-2.5×0.8(4121+2389)÷7
671×15-974 469×12+1492 405×(3213-3189)
四,解方程(每题1分,共10分)
8x-3x=105 x+5=7 2x+3=10 X-0.8X=6
12x+8x=4.8 7(x-2)=49
(x-2)÷3=7 ÷5+9=21 40-8x=5
×8+2x=36 4 x