Ⅰ 小學五年級數學簡便運算題
我分批發給你,記住我是submarine091
:1一班開學第一天每兩位同學見面互相握手問候一次,全班40人共握手多少次?
2一個等差數列的第2項是2.8,第三項是3.1,求這個等差數列的第15項。
3五年級二班有36名學生,班長吳虹去給大家買圖畫本,每人一本。回來後忘了數錢,只記得是◇1.1□元。問:每本圖畫本為元。
4東油庫存油是西油庫存油的6倍,若兩油庫各增加30噸油後,東油庫存油就將是西油庫存油量的3倍,兩油庫原來各存油多少噸?
5一個六位數ABCDEK,乘以E之後,原數為KABCDE,求原數是多少?(不同字母代表不同數字)原數為多少。
Ⅱ 小學五年級上冊簡便計算題目100題練習
99*250+250
Ⅲ 五年級上冊數學簡便計算30道題及答案
1、24.6-3.98+5.4-6.02
解析:此題利用加法交換結合律,湊整再計算。步驟如下:
24.6-3.98+5.4-6.02
=(24.6+5.4)-(3.98+6.02)
=30-10
=20
2、27×17/26
解析:此題先用加法分配律,把27轉換成(26+1),再利用乘法結合律,使得運算簡便。
27×17/26
=(26+1)×17/26
=26×17/26+1×17/26
=17+17/26
=17又17/26
3、528-99
解析:利用湊整法和減法結合律計算,先利用湊整法把99變換為(100-1),再運用a-b-c=a-(b+c)來簡便計算,步驟如下:
528-99
=528-(100-1)
=528-100+1
=428+1
=429
4、1.2×2.5+0.8×2.5
解析:運用提取公因數的方法,公式:ac+ab=a(b+c),提取公因數2.5,1.2和0.8相加正好湊整數,使得運算簡便。
1.2×2.5+0.8×2.5
=(1.2+0.8)×2.5
=2×2.5
=5
5、2.96×40
解析:此題先利用乘法分配律,把2.96×40轉換成29.6x4,再利用乘法結合律來簡便計算。
2.96×40
=29.6x4
=(30-0.4)x4
=30×4+0.4×4
=120-1.6
=118.4
6、0.36 x 1.5 - 0.45
解析:此題運用乘法分配律,把0.45轉換成1.5 x 0.3 ,即可提取公因數1.5,再根據乘法結合律進行簡便計算。
0.36 x 1.5 - 0.45
= 0.36 x 1.5 - 1.5 x 0.3
=1.5 × (0.36 - 0.3)
=1.5 × 0.06
= 0.09
7、46×44/45
解析:此題先利用加法分配律把46轉換成(45+1),再利用乘法結合律:(a×b)×c=a×(b×c)使得運算簡便。
46×44/45
=(45+1)×44/45
=45×44/45+44/45
=44+44/45
=44又44/45
8、1.6×7.5×1.25
解析:此題利用乘法分配律把1.6,轉化成2×0.8,再利用乘法結合律:(a×b)×c=a×(b×c)湊整,進行簡便計算。
1.6×7.5×1.25
=2×0.8×7.5×1.25
=(2×7.5)×(0.8×1.25)
=15×1
=15
9、0.72×10.1
解析:此題先利用加法分配律,把10.1轉換成10+0.1,再利用乘法結合律使得運算簡便。
0.72×10.1
=0.72×(10+0.1)
=0.72×10+0.72×0.1
=7.2+0.072
=7.272
Ⅳ 小學五年級簡便計算題
再給你一點,網上多的是五年級數學簡便計算練習卷
下面各題怎樣算簡便就怎樣算。
6.9+4.8+3.1
0.456+6.22+3.78
15.89+(6.75-5.89)
4.02+5.4+0.98
5.17-1.8-3.2
13.75-(3.75+6.48)
3.68+7.56-2.68
7.85+2.34-0.85+4.66
35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1
9.6+4.8-3.6
7.14-0.53-2.47
5.27+2.86-0.66+1.63
13.35-4.68+2.65
73.8-1.64-13.8-5.36
47.8-7.45+8.8
0.398+0.36+3.64
15.75+3.59-0.59+14.25
66.86-8.66-1.34
0.25×16.2×4
(1.25-0.125)×8
3.6×102
3.72×3.5+6.28×3.5
36.8-3.9-6.1
15.6×13.1-15.6-15.6×2.1
4.8×7.8+78×0.52
32+4.9-0.9
4.8×100.1
56.5×9.9+56.5
7.09×10.8-0.8×7.09
25.48-(9.4-0.52)
4.2÷3.5
320÷1.25÷8
18.76×9.9+18.76
3.52÷2.5÷0.4
3.9-4.1+6.1-5.9
5.6÷3.5
9.6÷0.8÷0.4
4.2×99+4.2
17.8÷(1.78×4)
0.49÷1.4
1.25×2.5×32
3.65×10.1
15.2÷0.25÷4
0.89×100.1
146.5-(23+46.5)
3.83×4.56+3.83×5.44
4.36×12.5×8
9.7×99+9.7
27.5×3.7-7.5×3.7
8.54÷2.5÷0.4
0.65×101
3.2×0.25×12.5
(45.9-32.7)÷8÷0.125
3.14×0.68+31.4×0.032
5.6÷1.25÷0.8÷2.5÷0.4
7.2×0.2+2.4×1.4
8.9×1.01
7.74×(2.8-1.3)+1.5×2.26
3.9×2.7+3.9×7.3
18-1.8÷0.125÷0.8
12.7×9.9+1.27
21×(9.3-3.7)-5.6
15.02-6.8-1.02
5.4×11-5.4
2.3×16+2.3×23+2.3
9.43-(6.28-1.57)
3.65×4.7-36.5×0.37
46×57+23×86
13.7×0.25-3.7÷4
2.22×9.9+6.66×6.7
101×0.87-0.91×87
10.7×16.1-15.1×10.7
0.79×199
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
0.86×15.7-0.86×14.7
2.4×102
2.31×1.2×0.5
14-7.32-2.68
2.64+8.67+7.36+11.33
70÷28
(2.5-0.25)×0.4
9.16×1.5-0.5×9.16
3.6-3.6×0.5
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
15÷(0.15×0.4)
0.35×1.25×2×0.8
32.4×0.9+0.1×32.4
15÷0.25
4.5÷1.8
4.2÷3.5
930÷0.6÷5
Ⅳ 小學五年級數學簡便計算題
五、計算題
1.口算(10分)
1.6÷0.4= 0.77×1= 7.5÷3= 1.5×6= 10÷0.1=
0.125×8= 31.4÷3.14= 1.4×10= 0.1×6.4= 4.16÷1=
2.用豎式計算 (10分)
1.26÷1.8= 64×5.04= 43.5÷0.29=
3.選擇合適的方法計算(10分)
2.47×6.5+7.53×6.5 76.1×17-76.1×7 0.65×101
Ⅵ 小學五年級簡便運算題(含過程)
41.2*8.1+11*1.25+53.7*1.9
=41.2(10-1.9)+53.7x1.9+11x1.25
=41.2x10-41.2x1.9+53.7x1.9+11x1.25
=41.2x10+1.9(53.7-41.2)+11x1.25
=41.2x10+1.9x12.5+11x1.25
=41.2x10+19x1.25+11x1.25
=41.2x10+30x1.25
=412+37.5
=449.5
+1/(1+2)+1/(1+2+3)+……+1/(1+2+3+……+60+61)
+2=2*3/2
1+2+3=3*4/2
1+2+3+4=4*5/2
……………………
1+2+3+……+61=61*62/2。1+2+3+……+n=n(n+1)/2,這是一個等差數列求和的公式。所以,原式=1+1/(1+2)+1/(1+2+3)+1/(1+2+3+4)+...+1/(1+2+3+...+61)
=1+2/(2*3)+2/(3*4)+2/(4*5)+……+2/(61*62)=2[(1/2+1/(2*3)+1/(3*4)+1/(4*5)+……+1/(61*62)〕=2[(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+……+(1/61-1/62)]
=2(1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+……+1/61-1/62)=2(1-1/62)=61/31=
1又31分之30。
Ⅶ 五年級上冊數學簡便運算題
1.125*3+125*5+25*3+25
2.9999*3+101*11*(101-92)
3.(23/4-3/4)*(3*6+2)
4. 3/7 × 49/9 - 4/3
5. 8/9 × 15/36 + 1/27
6. 12× 5/6 – 2/9 ×3
7. 8× 5/4 + 1/4
8. 6÷ 3/8 – 3/8 ÷6
9. 4/7 × 5/9 + 3/7 × 5/9
10. 5/2 -( 3/2 + 4/5 )
11. 7/8 + ( 1/8 + 1/9 )
12. 9 × 5/6 + 5/6
13. 3/4 × 8/9 - 1/3
14. 7 × 5/49 + 3/14
15. 6 ×( 1/2 + 2/3 )
16. 8 × 4/5 + 8 × 11/5
17. 31 × 5/6 – 5/6
18. 9/7 - ( 2/7 – 10/21 )
19. 5/9 × 18 – 14 × 2/7
20. 4/5 × 25/16 + 2/3 × 3/4
21. 14 × 8/7 – 5/6 × 12/15
22. 17/32 – 3/4 × 9/24
23. 3 × 2/9 + 1/3
24. 5/7 × 3/25 + 3/7
25. 3/14 ×× 2/3 + 1/6
26. 1/5 × 2/3 + 5/6
27. 9/22 + 1/11 ÷ 1/2
28. 5/3 × 11/5 + 4/3
29. 45 × 2/3 + 1/3 × 15
30. 7/19 + 12/19 × 5/6
31. 1/4 + 3/4 ÷ 2/3
32. 8/7 × 21/16 + 1/2
33. 101 × 1/5 – 1/5 × 21
34.50+160÷40
35.120-144÷18+35
36.347+45×2-4160÷52
37(58+37)÷(64-9×5)
38.95÷(64-45)
39.178-145÷5×6+42
40.812-700÷(9+31×11)
41.85+14×(14+208÷26)
43.120-36×4÷18+35
44.(58+37)÷(64-9×5)
45.(6.8-6.8×0.55)÷8.5
46.0.12× 4.8÷0.12×4.8
47.(3.2×1.5+2.5)÷1.6
48.6-1.6÷4= 5.38+7.85-5.37=
49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
50.6.5×(4.8-1.2×4)=
51.5.8×(3.87-0.13)+4.2×3.74
52.32.52-(6+9.728÷3.2)×2.5
53.[(7.1-5.6)×0.9-1.15] ÷2.5
54.5.4÷[2.6×(3.7-2.9)+0.62]
55.12×6÷(12-7.2)-6
56.12×6÷7.2-6
57.0.68×1.9+0.32×1.9
58.58+370)÷(64-45)
59.420+580-64×21÷28
60.136+6×(65-345÷23)
15-10.75×0.4-5.7
62.18.1+(3-0.299÷0.23)×1
63.(6.8-6.8×0.55)÷8.5
64.0.12× 4.8÷0.12×4.8
65.(3.2×1.5+2.5)÷1.6
66.3.2×6+(1.5+2.5)÷1.6
67.0.68×1.9+0.32×1.9
68.10.15-10.75×0.4-5.7
69.5.8×(3.87-0.13)+4.2×3.74
70.32.52-(6+9.728÷3.2)×2.5
71.[(7.1-5.6)×0.9-1.15] ÷2.5
72.5.4÷[2.6×(3.7-2.9)+0.62]
73.12×6÷(12-7.2)-6
74.12×6÷7.2-6
75.33.02-(148.4-90.85)÷2.5
1) 76.(25%-695%-12%)*36
77./4*3/5+3/4*2/5
78.1-1/4+8/9/7/9
79.+1/6/3/24+2/21
80./15*3/5
81.3/4/9/10-1/6
82./3+1/2)/5/6-1/3]/1/7
83./5+3/5/2+3/4
84.(2-2/3/1/2)]*2/5
85.+5268.32-2569
86.3+456-52*8
87.5%+6325
Ⅷ 五年級簡便計算50題
用簡便方法計算下列各題
0.25×0.28
0.125×3.2×2.5
35×40.2
0.25×4÷0.25×4
3.5×9.9
3.5×99+3.5
3.5×101-3.5
3.5×9.9+3.5×0.1
3.5×2.7+35×0.73
3.5×2.7-3.5×0.7
(32+5.6)÷0.8
3.5÷0.6-0.5÷0.6
4.9÷3.5
7÷0.25÷4
7÷0.125 ÷8
7.35÷(7.35×0.25)
7.35÷(7.35÷0.25)
7.325-(5.325+1.7)
3.29+0.73+2.27
3.29-0.73-2.27
7.5+2.5-7.5+2.5
7.325-3.29-3.325
7.325-(5.325+1.7)
7.325-(5.325-1.7)
3.29+0.73-2.29+2.27
3.29×0.25×4
0.125×8.8
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
28.6×101-28.6
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
7.6×0.8+0.2×7.6
0.85×199
0.25×8.5×4
0.25×36
0.125×3.2×2.5
35×40.2
Ⅸ 五年級上冊,簡便運算20道題
五年級上冊簡便演算法題
10÷.14-6.86÷3.14
37.68÷0.25÷4
3.75-(2.75-1.3)
37.56-(18+7.56) 0.77÷14
4.5×9.8
0.7÷0.125
0.7÷0.25
2.5×3.2×12.5
12.5×9.6×0.25
3.75-(2.8-1.25)
37.65÷0.4÷0.25
3.125÷8÷0.125
37.65-4.75-3.25
25×6.4×12.5
3.6×0.25
答案
10÷3.14-6.86÷3.14 =(10-6.86)÷3.14 =3.14÷3.14 =1
37.68÷0.25÷4 =37.68÷(0.25×4) =37.68÷1 =37.68
3.75-(2.75-1.3) =3.75-2.75+1.3 =1+1.3 =2.3
37.56-(18+7.56) =37.56-7.56-18 =30-18 =12 0.77÷14 =0.77÷7÷2 =0.11÷2 =0.055 4.5×9.8
=4.5×(10-0.2) =4.5×10-4.5×0.2 =45-0.9 =44.1 0.7÷0.125
=(0.7×8)÷(0.125×8) =0.56÷1 =0.56 0.7÷0.25
=(0.7×4)÷(0.25×4) =2.8÷1 =2.8
2.5×3.2×12.5 =(2.5×0.4)×(8×12.5) =1×100 =100
12.5×9.6×0.25
=(12.5×0.8)×3×(4×0.25) =10×3×1 =30
3.75-(2.8-1.25) =3.75+1.25-2.8
=5-2.8 =2.2
37.65÷0.4÷0.25 3.125÷8÷0.125 37.65-4.75-3.25 25×6.4×12.5 =25×4×0.2×8×12.5 3.6×0.25 =(4-0.4)×0.25 3.4÷9+5.6÷9 =