1樓：新野旁觀者
1．6＋7＋8＋9＋…＋48
=(6＋48)×( 48－6＋1)÷2
=1161
2．1－2＋3－4＋5－…－2008＋2009
=2009－2008＋2007－2006＋…＋5－4＋3－2＋1
=(2009－2008)＋(2007－2006)＋…＋(5－4)＋(3－2)＋1
=1×(2009-1)÷2＋1=1005
3．1＋2＋3－4＋5＋6＋7－8＋9＋…＋85＋86＋87－88
=(1＋2＋3－4)＋(5＋6＋7－8)＋9＋…＋(85＋86＋87－88)
=2＋10＋18＋…＋170
=(2＋170)×(88÷4)÷2
=172×11
=1892
4．1988－1985＋1982－1979＋…＋8－5＋2
=（1988－1985)＋(1982－1979)＋…＋(8－5)＋2
=3×[(1988-5)÷3＋1]÷2＋2
=3×331＋2
=995
5．1999－1996＋1993－1990＋…－10＋7－4＋1
=(1999－1996)＋(1993－1990)＋…－10＋(7－4)＋1
=3×[(1999－4)÷3＋1]÷2＋1
=3×333＋1
=1000
6.1999×19981997－1997×19981999
=1999×(19980000＋1997)－1997×(19980000＋1999)
=1999×19980000＋1999×1997－[1997×19980000＋1997×1999]
=1999×19980000＋1999×1997－1997×19980000－1997×1999
=(1999－1997)×19980000
=39960000
7.1035-998
8.5076＋99
9.3008＋449
10.428×25×4
11.328-189-28
12.43.2-（3.2-1.28）
13.25×2×1.25×4×5×8
14.84×0.25＋16÷4
15.5731-（731-525）=5731-731-525
=5000-525
=4475
2樓：
50道二次根式的乘除乘乘除的數學題
50道計算題帶答案過程 5
3樓：敏晏
789換個號苦發個7
4樓：新野旁觀者
408－12×24 = 408 - 288 = 120
（46＋28）×60 = 74 x 60 = 4440
42×50－17 = 2100- 17 = 2083
32＋105÷5 = 32 + 21 = 53
420×（327－238） = 420 x 89 = 37380
(4121+2389)÷7 = 6510 ÷7 = 930
3.416÷（0.016×35） = 3.416 ÷0.56 = 6.1
0.8×[(10－6.76)÷1.2] = 0.8 x(3.24÷1.2) = 0.8 x 2.7 = 2.16
5.67×0.2-0.62 = 1.134-0.62 = 0.514
0.4×0.7×0.25 = 0.4 x 0.25 x 0.7 = 0.1 x 0.7 = 0.07
0.78+5.436+1 = 6.216 +1 = 7.216
30.8÷[14－(9.85＋1.07)] = 30.8 ÷ (14 - 10.92) = 30.8÷3.08 = 10
[60－(9.5＋28.9)]÷0.18 = (60- 38.4)÷0.18 = 21.6 ÷0.18 = 120
2.881÷0.43－0.24×3.5 = 6.7 - 0.24 x3.5 = 6.7 - 0.84 = 5.86
20×[(2.44－1.8)÷0.
4＋0.15] = 20x (0.64 ÷0.
4 +0.15)= 20x(1.6 +0.
15) = 20 x1.75 = 35
28-(3.4+1.25×2.4) = 28 - (3.4 + 3) = 28 - 6.4 = 21.6
2.55×7.1+2.45×7.1 = (2.55 + 2.45) x7.1 = 5 x7.1=35.5
0.8×〔15.5-(3.21+5.79)〕 = 0.8 x (15.5 - 9) = 0.8 x 6.5 = 5.2
（31.8+3.2×4）÷5 = (31.8 + 12.8)÷5 = 44.6÷5 = 8.92
31.5×4÷(6+3) = 126 ÷ 9 = 14
2÷2.5+2.5÷2 = 0.8 + 1.25 =2.05
194－64.8÷1.8×0.9 = 194 -36 x0.9 = 194-32.4 = 161.6
5180－705×6 = 5180 - 4230=950
24÷2.4－2.5×0.8 =10 -2=8
405×(3213-3189) =405x24 = 9720
125×(97-81) =125x16 =2000
6942+480÷3 = 6942 + 160 = 6782
20+80÷4-20 = 20 + 20 -20 = 40 -20 = 20
100÷（32-30）×0 = 100 ÷2 x0= 50 x0 = 0
25×4-12×5 = 100 - 60 = 40
70×〔（42-42）÷18〕=70 x (0÷18) = 70x0 = 0
75×65+75×35 = 75 x (65 +35) = 75x100 = 7500
6-1.6÷4= 6- 0.4 = 5.6
5.38+7.85-5.37= 13.23 - 5.37=7.86
7.2÷0.8-1.2×5=9 - 6 =3
6-1.19×3-0.43= 6-3.57 - 0.43 = 6- (3.57 + 0.43) = 6-4 = 2
6.5×（4.8-1.2×4）= 6.5 x(4.8 - 4.8 )=6.5 x0 = 0
0.68×1.9+0.32×1.9 = (0.68 + 0.32) x1.9 = 1 x 1.9 = 1.9
10.15-10.75×0.
4-5.7 = 10.15 - 4.
3 - 5.7 = 10.15 -(4.
3 + 5.7)=10.15 - 10 =0.
155.8×（3.87-0.
13）+4.2×3.74 = 5.
8 x 3.74 +4.2 x 3.
74 = (5.8 +4.2)x3.
74 = 10 x 3.74 = 37.4
32.52-（6+9.728÷3.
2）×2.5 = 32.52 - (6+3.
04)x2.5 = 32.52 - 9.
02 x 2.5 = 32.52 -22.
55 = 9.97
（136+64）×（65-345÷23）= 200x(65-15) = 200x 50=10000
（48+370）÷（64-45）=418 ÷19 =22
14 × 8/7 – 5/6 × 12/15 =16 - 2/3 = 15x1/3
17/32 – 3/4 × 9/24 = 17/32 - 27/96= 51/96 - 27 /96 = 24/96 = 1/4
3 × 2/9 + 1/3 = 2/3 + 1/3 = 1
5/7 × 3/25 + 3/7 =3/35 + 3/7= 3/35 +15/35= 18/35
1/5 × 2/3 + 5/6 = 2/15 + 5/6 = 4/30 + 25/30 = 29/30
9/22 + 1/11 ÷ 1/2 = 9/22+ 1/11 x 2 = 9/22 +2/11 = 9/22 +4/22 = 13/22
5/3 × 11/5 + 4/3 = 11/3 +4/3 = 15/3 = 5
45 × 2/3 + 1/3 × 15 = 30+5 = 35
7/19 + 12/19 × 5/6 =7/19 + 10/19=17/19
1/4 + 3/4 ÷ 2/3 =1/4+ 1/2 = 1/4 + 2/4 = 3/4
8/7 × 21/16 + 1/2= 3/2+1/2 = 2
50道五年級脫式計算題帶過程和答案，有答案和過程的加分，謝謝了。 15
5樓：匿名使用者
50道五年級脫式計算題帶過
6樓：匿名使用者
下次自己做題，我可不幫你了！
0.4×125×25×0.8
=（0.4×25）×e68a84e8a2ad62616964757a686964616f31333433616234（125×0.8)
=10×100=1000
1.25×（8+10）
=1.25×8+1.25×10
=10+12.5=22.5
9123-（123+8.8）
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×（1.24+1.76)
=8.3×3=24.9
9999×1001
=9999×（1000+1）
=9999×1000+9999×1
=10008999
14.8×6.3-6.
3×6.5＋8.3×3.
7=（14.8-6.5）×6.
3＋8.3×3.7=8.
3×6.3+8.3×3.
78.3×（6.3＋3.7）
=8.3×10
=831.24+0.78+8.76
=（1.24+8.76）+0.78
=10+0.78
=10.78
933-157-43
=933-（157+43）
=933-200
=733
4821-998
=4821-1000+2
=3823
32×125×25
=4×8×125×25
=（4×25）×（8×125）
=100×1000
=100000
9000÷72×(1.25×0.7×8)
=9000÷72×7
=125×7
=875
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
1/2-(4/5-1/2)
=1/2+1/2-4/5
=1-4/5
=1/5
4800÷25÷4
=4800÷(25x4)
=4800÷100
=4800÷100
=482/5-(3/8-3/5)
=2/5+3/5-3/8
=1-3/8
=5/8
3/4-(3/7-1/4)
=3/4+1/4-3/7
=1-3/7
=4/7
3.2x0.125x2.5
=0.125x8x(0.4x2.5)
=1x1
=1 0.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100
=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3
=24.9
9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
14.8×6.3-6.
3×6.5+8.3×3.
7=(14.8-6.5)×6.
3+8.3×3.7=8.
3×6.3+8.3×3.
7=8.3×(6.3+3.7)
=8.3×10
=831.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
933-157-43
=933-(157+43)
=933-200
=733
4821-998
=4821-1000+2
=3823
32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
1.8+18÷1.5-0.5×0.3
=1.8+12-0.15=13.8-0.15=13.65 6.5×8+3.5×8-47=52+28-47=80-47=33
3.7x2.56-2.3
=9.472-2.3
=7.172
1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
1/2-(4/5-1/2)
=1/2+1/2-4/5=1-4/5
=1/5
4800÷25÷4
=4800÷(25x4)
=4800÷100
=482/5-(3/8-3/5)
=2/5+3/5-3/8
=1-3/8
=5/8
3/4-(3/7-1/4)
=3/4+1/4-3/7
=1-3/7
=4/7
3.2x0.125x2.5
=0.125x8x(0.4x2.5)
=1x1
=10.4×125×25×0.8
=(0.4×25)×(125×0.8)
=10×100
=1000
1.25×(8+10)
=1.25×8+1.25×10
=10+12.5
=22.5
9123-(123+8.8)
=9123-123-8.8
=9000-8.8
=8991.2
1.24×8.3+8.3×1.76
=8.3×(1.24+1.76)
=8.3×3
=24.9
61-(1.25+2.5×0.7)
=61-3
=58[(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125
=19.05-16
=3.05
408－12×24
=408-288
=120
（46＋28)×60
=74x60
= 4440
42×50－17
= 2100-17
= 2083
32＋105÷5
=32+21
= 53
420×（327－238)
= 420x89
= 37380
(4121+2389)÷7
=6510÷7
= 930
3.416÷（0.016×35）
= 3.416 ÷0.56
= 6.1
0.8×[(10－6.76)÷1.2]
= 0.8 x(3.24÷1.2)
= 0.8 x 2.7
= 2.16
5.67×0.2-0.62
= 1.134-0.62
= 0.514
0.4×0.7×0.25
=0.4x0.25x0.7
=0.1×0.7
= 0.07
50道計算題帶答案過程，50道計算題帶答案過程
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