Ⅰ 小學數學簡算計算題
三年級數學簡便運算
(1)284+(591+716)
(2)153+178+122+547
(3)(141+229)+(371+659+1048)
(4)926-348-152
(5)1584-627-373+416
(6)1276-(276+339)
(7)4628-(1628-794)
(8)526+498
(9)803+488
(10)938-299
(11)836-402
(12)635+327+125+(363+240)
(13)9999+999+99+9+6
(14)32+34+36+38+40+42+44+46+48
(15)(1347-258)-(347+742)
(16)3560-(474-440)-526
(17)12345+23451+34512+45123+51234
(18)5+10+15+20+…+95
(19)5+6+7+8+…+103+104
(20)(2+4+6+…+100)-(1+3+5+…+99)
四年級數學簡便運
(1)(78+61)+39
(2)700-82-18
(3)348+163+242+410+537
(4)125×47-47×25
(5)201×316
(6)374-205+226-95
(7)3000-999
(8)997×7+21
(9)87×470+870×53
(10)(55+55+55+55×5)×125
(11)125×(8+40)×25
(12)99+49×99
(13)264×97+4×264
(14)454+999×999+545
(15)9999×36+6666×3×32
(16)124×38+65×124+76×110-76×7
(17)62×4+44×5+5×18
(18)3400-62×34-38×20-38×14
(19)1992×19911991-1991×19901990
(20(2+4+6+……+100)-(1+3+5+……+99)
小數簡便運算練習
4.8+8.63+5.2+0.37
5.93+0.19+2.81
1.76+0.195+3.24
2.35+1.713+0.287+7.65
1.57+0.245+7.43
6.02+3.6+1.98
0.134+2.66+0.866
1.27+3.9+0.73+16.1
7.5+4.9-6.5
3.07-0.38-1.62
1.29+3.7+2.71+6.3
8-2.45-1.55
3.25+1.79-0.59+1.75
23.4-0.8-13.4-7.2
0.32×403
3.2+0.36+4.8+1.64
1.23+3.4-0.23+6.6
0.25×36
12.7-(3.7+0.84)
36.54-1.76-4.54
0.25×0.73×4
7.6×0.8+0.2×7.6
0.85×199
0.25×8.5×4
1.28×8.6+0.72×8.6
12.5×0.96×0.8
10.4-9.6×0.35
0.8×(4.3×1.25)
3.12+3.12×99
28.6×101-28.6
(4.23+6.17)×0.8
0.86×15.7-0.86×14.7
2.4×102
14-7.32-2.68
2.64+8.67+7.36+11.33
2.31×1.2×0.5
(2.5-0.25)×0.4
9.16×1.5-0.5×9.16
3.6-3.6×0.5
4.5÷1.8
4.2÷3.5
930÷0.6÷5
63.4÷2.5÷0.4
4.9÷1.4
3.9÷(1.3×5)
(7.7+1.54)÷0.7
2.5×2.4
2.7÷45
0.35×1.25×2×0.8
32.4×0.9+0.1×32.4
15÷0.25
70÷28
15÷(0.15×0.4)
4.25÷2.5×9.9+0.17
這些題目可是找得我很辛苦的,希望能採納為最佳答案
Ⅱ 四年級數學下冊簡便計算題1000道
乘法分配律練習題
乘法分配律特別要注意「兩個數的和與一個數相乘,可以先把它們與這個數分別相乘,再相加」中的分別兩個字。
1、選擇。下面4組式子中,哪道式子計算較簡便?把算式前面的序號填在括弧里。
⑴①(36+64)×13與②36×13+64×13 ()
⑵①135×15+65×15與②(135+65)×15 ()
⑶①101×45與②100×45+1×45 ()
⑷①125×842與②125×800+125×40+125×2 ()
2、判斷下面的5組等式,應用乘法分配律用對的打「ü」,應用錯的打「×」
①(7+8+9)×10=7×10+8×10+9 ()
②12×9+3×9 = 12+3×9 ()
③(25+50)×200 = 25×200+50 ()
④101×63=100×63+63 ()
⑤98 ×15= 100 ×15 + 2 ×15 ()類型一:(注意:一定要括弧外的數分別乘括
號里的兩個數,再把積相加)
(40+8)×25 125×(8+80)
36×(100+50)24×(2+10)
86×(1000-2)15×(40-8)
類型二:(注意:兩個積中相同的因數只能寫
一次)
36×34+36×66 75×23+25×23
63×43+57×63 93×6+93×4
325×113-325×13 28×18-8×28 類型三:(提示:把102看作100+2;
81看作80+1,再用乘法分配律)
78×102 69×102
56×101 52×102
125×81 25×41
類型四:(提示:把99看作100-1;39
看作40-1,再用乘法分配律)
31×99 42×98
29×99 85×98
125×79 25×39
類型五:(提示:把83看作83×1,再用乘法分配律)
83+83×99 56+56×99
99×99+99 75×101-75
125×81-125 91×31-91
簡便計算120道練習題
(1)67+42+33+58 (2)258-58-26-74 (3)125×16 (4)50×(2×4)×25
(5)7×8×3×125 (6)26×103 (7)501×12 (8)25×(40+8)(9)39×14+61×14 (10)163×8+37×8 (11)202×13 (12)77×4×5 (13)27×99 (14)48×250
(15)98+303 (16)49+49×49 (17)55×25+25×45 (18)123×67-23×67
(19)39×101-39 (20)99×64+64 (21)76×23+24×23 (22)12+19×12
(23)21+254+79+46 (24)25×16×5 (25)52×32+48×32 (26)18×137-18×37 (27)450÷18 (28)420÷35 (29)480÷15 (30)21×99 (31)125×32 (32)12×301 (33)75×3×4 (34)19+99×19 (35)256×9-46×9 (36)13+13×49(37)(25+125)×8 (38)541×67-67×441 (39)43×201 (40)102×35 (41)304×22 (42)(30+4)×25 (43)38×7+62×7 (44)152×8+148×8 (45)16×401(46)103×23(47)(30+2)×15 (48)125×(8+16)(49)68×48+68×2 (50)5×27+63×5(51)12×(40-5)(52)35×98 (53)64×9-14×9 (54)23×134-34×23 (55)102×45 (56)648+203 (57)98×32
(58)44×25 (59)63+15×2 (60)43+43×39 (61)27×37+37×23 (62)256×7-56×7 (63)48×101-48 (64)99×62+62 (65)41×99(66)765+98(67)560÷16(68)201×34 (69)36×25 (70)304+297 (71)18×45+18×55(72)226×13-26×13(73)15×301-15 (74)(30+8)×25(75)25×65+25×25(76)75×141-75×40(77)125×18(78)25×35+25 (79)71×23-71×13 (80)125×(80-8)(81)101×89-89 (82)88×22+22×12
(83)28×57+43×28 (84)202×41 (85)25×19×4 (86)47+99+47 (87)103×37 (88)34×201 (89)25×5×16 (90)56+56×49 (91)57×26+26×43 (92)373×9-73×9 (93)78×101-78 (94)199×53+53 (95)25×124-24×25 (96)250×28 (97)125×16 (98)250×9×4 (99)48×125 (100)402×15 (101)(25+250)×4 (102)199×9+199 (103)24×250 (104)27×18+82×27 (105)2×46+46×18 (106)401×25 (110)25×19 (107)72×101(108)42×(30-1)(109)101×85-85(111)152×49+51×152(112)24×25 (113)93×99+93 (114)13×125×8 (115)125×17+63×125 (116)492-145-155 (117)43×25×2 (118)50×(60+8)(119)28×111-28×11 (120)63×8+91×63+63
Ⅲ 小學數學簡便計算題
小學六年級數學總復習資料(六) 【簡便計算】
班級: 姓名:
一、口算下面各題。(23分)
10-2.65= 0.9×0.08= 528-349= 6+14.4= 24÷0.04=
12.34-2.3= 0÷3.8= 0.77+0.33= 7÷1.4= 67.5+0.25=7.2÷8×4= 5-1.4-1.6= 400÷125÷8= 1.9×4×0.5=
80×0.125= 3× = 6 6= 2 -( + )= 10 2=
3.2×7÷3.2×7= ( - )×12= 187.7×11-187.7= 1- 62.5%=
二、寫出下列每題在簡便運算時所運用的定律或性質(12分)
4 +3.2+5 +6.8 25×(8×0.4)×1.25 7 -(2 - )
( ) ( ) ( )
( + + )×72 93.5÷3 16÷2.5
( ) ( ) ( )
三、用簡便方法計算。(65分)
1125-997 998+1246+9989 (8700+870+87)÷87
125×8.8 1.3+4.25+3.7+3.75 17.15-(3.5-2.85)
3.4×99+3.4 4.8×1.01 0.4×(2.5÷73)
(1.6+1.6+1.6+1.6)×25 ( + - )÷
12.3-2.45-5.7-4.55 2 + 0.125×0.25×64
64.2×87+0.642×1300 78×36+7.8×741-7 17+ 8
0.125× +0.5 2.42 +4.58 -43
25÷100 4.25-3 -(2 -1 )
(1)1.25*17.6+36.1/0.8+2.36*12.5
1.25*17.6+36.1/0.8+2.36*12.5
=(5/4)*17.6+36.1*(5/4)+23.6*(50/4)
=176/8+361/8+236/8
=773/8=96.625
(2)7.5*2.3+1.9*2.5
7.5*2.3+1.9*2.5
=7.5*(1.9+0.4)+1.9*2.5
=(7.5+2.5)*1.9+7.5*0.4
=19+3 =22
(3)2004/2003*2005
2004/2003*2005
=(2004/2003)*(2003+2)
=2004+4008/2003
(4)276*543-267/276+543*275
276*543-267/276+543*275
=543*(276+275)-267/276
=543*551-267/276
1)五十二又二十五分之十一×79.45+159×47.56+七十九又二十分之十一×52.44
=52.44×79.45+159×47.56+79.55×52.44
=52.44×(79.45+79.55)+159×47.56
=52.44×159+159×47.56
=159×(52.44+47.56)
=159×100
=15900
3)2002+2001-2000-1999+1998+1997-1996-1995+……+2+1
=(2002-2000)+(2001-1999)+(1998-1996)+(1997-1995)+……+(6-4)+(5-3)+2+1
=2+2+2+2+……+2+2(從3-2002共2000個數,所以有1000個2)+2+1
=1000×2+2+1
=2003
4,5兩題均用到一個轉換式1/(A×B)=1/(B-A)×(1/A-1/B)
如1/15=1/(3×5)=1/(5-3)×(1/3-1/5)=1/2×(2/15)=1/15可驗證一下
4)(1×2分之一)+(2×3分之一)+(3×4分之一)+……+(10×11分之一)
=1/(1×2)+1/(2×3)+1/(3×4)+……+1/(10×11)
=(1-1/2)+(1/2 - 1/3)+(1/3 - 1/4)+……+(1/10 - 1/11)
=1-1/11
=10/11
5)三分之一+十五分之一+三十五分之一+六十三分之一+九十九分之一
=1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+1/(9×11)
=1/2×(1-1/3)+1/2×(1/3-1/5)+1/2×(1/5-1/7)+1/2×(1/7-1/9)+1/2×(1/9-1/11)
=1/2×(1 - 1/3 + 1/3 - 1/5 + 1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11)
=1/2×(1-1/11)
=1/2×10/11
=5/11
6)一又二分之一-六分之五+十二分之七-二十分之九+三十分之十一-四十二分之十三+五十六分之十五
(根據提示,1又1/2=1+1/2,+1/2+1/3=5/6……)
=(1+1/2)-(1/2+1/3)+(1/3+1/4)-(1/4+1/5)+(1/5+1/6)-(1/6+1/7)+(1/7+1/8)
=1+ 1/2 - 1/2 - 1/3 + 1/3 + 1/4 - 1/4 - 1/5 + 1/5 + 1/6 - 1/6 - 1/7 + 1/7 + 1/8
=1+1/8
=9/8
仔細看一下,不會很難,都可以簡便算的。你自己看一下,有些題目化成分數會好算些,我不是六年級的,不知道你們學的和我們是否一樣,只能找一些,抱歉,請原諒。
參考資料:http://..com/question/25720341.html
Ⅳ 超簡單的小學數學問題(簡算題)
1/2+3/4+7/8+15/16+31/32+63/64+127/128
=1/2+(1-1/4)+(1-1/8)+(1-1/16)+(1-1/32)+(1-1/64)+(1-1/128)
=1/2+6-(1/4+1/8+1/16+1/32+1/64+1/128)
=7-(1/2+1/2^2+1/2^3+1/2^4+1/2^5+1/2^6+1/2^7)
=7-(1-1/2^7)·············註:直接用等比數列求和公式;
=6+1/2^7
=6+1/128
=769/128
也可以
設A=1/2+1/2^2+1/2^3+1/2^4+1/2^5+1/2^6+1/2^7
在A的兩邊同乘以1/2,得
1/2A=1/2^2+1/2^3+...+1/2^7+1/2^8
兩式相減,得
A-1/2A=1/2-1/2^8
1/2A=1/2-1/2^8
A=1-1/2^7
Ⅳ 小學數學簡便計算題30道
158+262+138
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999
7755-(2187+755)
2214+638+286
3065-738-1065
899+344
2357-183-317-357
2365-1086-214
497-299
2370+1995
3999+498
1883-398
12×
75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25
25×32×125
32×(25+125)
88×125
102×76
58×98
178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3
25×(24+16)
178×99+178
79×42+79+79×57
7300÷25÷4
8100÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700
1248÷24
3150÷15
4800÷25
21500÷125
附加題:
2356-(1356-721)
1235-(1780-1665)
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)
Ⅵ 小學數學簡便運算
1、
3.6×1.9+35×0.81
=3.6×1.9+3.5×8.1
=(3.5+0.1)×1.9+3.5×8.1
分配率=3.5×1.9+0.1×1.9+3.5×8.1
=3.5×(1.9+8.1)+0.19
=3.5×10+0.19
=35+0.19=35.19
2、7.6×10.2-0.76×2
=7.6×10.2-7.6×0.19(把0.76乘以10為7.6,要保持原式不變,給2除以10,得)
=7.6×(10.2-0.2)
=7.6×10=76
3、27.6×17+82.4×17-170(找規律,裡面都有17,就找出來,在分配律)
=27.6×17+82.4×17-17×10
=17×(27.6+82.4-10)
=17×100=1700
4、0.8888×0.6+0.2222×7.6(找規律,裡面都含有0.2222,找出來)
=0.2222×4×0.6+0.2222×7.6
=0.2222×(2.4+7.6)
=0.2222×10+2.222
Ⅶ 小學數學簡便計算題:
1999-(543×375-363分之180+543×374)
題都表示不清,還問什麼 ?
1999-(180+543×374)/(543×375-363)
=1999-(180+543×374)/(543×374+543-363)
=1999-(180+543×374)/(543×374+180)
=1999-1
=1998
(5×6×7 分之1)+(6×7×8分之1)+(7×8×9分之1)
=1/2×[1/(5×6)-1/(6×7)+1/(6×7)-1/(7×8)+1/(7×8)-1/(8×9)]
=1/2×[1/(5×6)-1/(8×9)]
Ⅷ 小學數學題目簡便運算
1、1/5X6/13X5
=(1/5X5)X6/13=6/13
2、24X(5/12+3/8)
=24X5/12+24X3/8
=10+9
=19
3、1/4X32X5/8
=(1/4X32)X5/8
=8X5/8
=5
4、5/12X11+5/12
=5/12(11+1)
=5/12X12
=5
5、1/4X2/3+1/4X4/3
=1/4X(2/3+4/3)
=1/4X2
=1/2
6、2007/2008X2009
=2007/2008X(2008+1)
=2007/2008X2008+2007/2008
=2007+2007/2008
=2007又2008分之2007
Ⅸ 小學數學簡算
http://www.mathcn.com/Article_D/2005-11/926546964753858.htm
http://www.google.cn/search?complete=1&hl=zh-CN&newwindow=1&q=%E5%B0%8F%E5%AD%A6%E6%95%B0%E5%AD%A6%E7%AE%80%E7%AE%97%E9%A2%98&revid=339645535&sa=X&oi=revisions_inline&resnum=0&ct=broad-revision&cd=1
Ⅹ 小學數學計算題(用簡便方法計算)
(1)=12.54+(3.66+6.34)=12.54+10=22.54
(2)=8.37-7+0.26+2.26=1.37+2.52=3.89
(3)=5.93-1.93+2.86=4+2.86=6.86
(4)=18.2-(6.54+1.46)=18.2-8=10.2
(5)=19.6-9.6-5.9=10-5.9=4.1
(6)=12.94-(3.68+6.32)=12.94-10=2.94
(7)=20.18-10.18+9.39=10+9.39=19.39
(8)=32.92-9.73-22.92=32.92-22.92-9.73=10-9.73=0.27
(9)=12.68-(3.67+1.33)+3.32=12.68-5+3.32=11
(10)=59.18-9.18-(16.8+3.2)=30
(11)=46.03+10.97-(5.95+6.05)=45
我剛剛檢查過了,保證全對,那個最快回答第一題錯的