1樓：新野旁觀者
2/3-7/8+1/3
=(2/3+1/3)-7/8
=1-7/8
=1/8
5/6-(3/7-1/6)
=(5/6+1/6)-3/7
=1-3/7
=4/7
1-1/3-2/3
=1-(1/3+2/3)
=1-1
=01+3/5-1/10
=1+6/10-1/10
=1+1/2
=1又1/2
3/8-12/13+5/8
=3/8+5/8-12/13
=1-12/13
=1/13
1-(1/2-3/4)
=1+3/4-2/4
=1+1/4
=5/4
1-1/2-1/4
=1/2-1/4
=2/4-1/4
=1/4
2/7-8/9+5/7
=(2/7+5/7)-8/9
=1-8/9
=1/9
2-1/4-3/4
=2-(1/4+3/4)
=2-1
=11/2-(3/8-1/2)
=1/2+1/2-3/4
=1-3/8
=5/8
3/7-5/8+4/7
=3/7+4/7-5/8
=1-5/8
=3/8
1/2-1/3+1/2
=1/2+1/2-1/3
=1-1/3
=2/3
3/4-(1/2-1/4)
=3/4+1/4-1/2
=1-1/2
=1/2
3/5+4/5-2/5
=7/5-2/5
=11/6-(3/4-5/6)
=1/6+5/6-3/4
=1-3/4
=1/4
1/9-(1/8-8/9)
=1/9+8/9-1/8
=1-1/8
=7/8
1/2-(3/5-1/2)
=1/2+1/2-3/5
=1-3/5
=2/5
2樓：巨集哥
13/8-7/19-12/19
=13/8-(7/19+12/19)
=13/8-1
=5/8
7/13+8/17+6/13+9/17
=(7/13+6/13)+(8/17+9/17)=1+1=2
3樓：熱情的小小
1/5+1/25+(1/6-3/5)
2. 7/36+5/6-2/9
3. 5/44-(7/30-2/11)+1/24. 1/2+1/3+1/4+1/5+1/65.
1+1/2+1/6+1/12+1/20+1/30+1/426. 2/35-3/5-6/7
7. 4/23+4/21+5/46-1/428. 1/7+1/77+1/777+1/77779. 5/6-3/4+7/9
10. 99/100+100/99
11. 22/5-4/47+34/55
12. 11/23+2/46-11/34
13. 1/2+2/3+3/4
14. 44/3+25/6
15. 1/5-2/3-4/7
16. 22/18+11/23-31/6
17. 2/5-4/(5+6+7)-2/718. 18/3-36/6+12/5
19. 8/9+1/7+2/27
20. 1/100+3/2-23/46
1/5+8/15+3/5=
1/6+2/8+24/5=
2/5+3/5-5/2=
25/6-2/5+2/8=
5/8+6/7+2/9=
1/2+1/3+1/4=
1/5+6/7+9/4=
1/5+1/8x2/7=
1/8-2/7x+3/9=
2/7+5/8-9/6=
2/8+2/9-2/7=
8/4+2/5-4/5=
1/6+2/8+24/5=
2/5+3/5-5/2=
25/6-2/5+2/8=
5/8+6/7+2/9=
1/2+1/3+1/4=
1/5+6/7+9/4=
1/5+5/6+5/5=
1/5+3/5-4/6=
1/6+4/6-1/9=
1/8-1/9+1/7=
4樓：祕蕾盧醜
1.某市舉辦一次數學競賽，設1、2、3等獎若干名。競賽結果：獲一二等獎的佔獲獎人數的五分之二，獲二三等獎的佔獲獎總人數的十分之九。獲一二三等獎的各佔獲獎總人數的幾分之幾
5樓：劉起雲雪賦
1，獎八分之五的分子加上10，要使分數的大小不變，分母應加多？2：13分之1的分子、分母同時加上多少後就可以約成3分之1！
6樓：奇蹟與我有關
2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2
4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35
4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14
30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18
5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4
10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5
8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8
9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18
11/14-3/14+1/8
=4.05-(2.8+0.7)
=0.55
4.05-2.8-0.7
=4.05-(2.8+0.7)
=0.55
212+198
=(200+12)+(100+98)
=200+12+100+98
=12+98+100+200
=110+100+200
=410
13.75-(3.75+6.48)
=13.75-3.75-6.48
=10-6.48
=3.52
（0.75*42.7+57.3-0.573*25）/3*7972
=(0.75*42.7+57.3*1-57.3*0.25)/3*7972
=[0.75*42.7+57.3(1-0.25)]/3*7972
=[0.75*42.7+57.3*0.75]/3*7972
=[(42.7+57.3)*0.75]/3*7972
=75/3*7972
=25*7972
=199300
3.45*0.6*2.8=3.45×2.8×0.6=5.796
4.02＋5.4＋0.98
=4.02+0.98+5.4
=5+5.4
=10.4
5.17－1.8－3.2
=5.17-（1.8+3.2）
=5.17-5
=0.17
13.75－(3.75＋6.48)
=13.75-3.75-6.48
=3.52
33*145+33*55
=(145+55)*33
=200*33
=6600
369*136-36*369
=100*369
=36900
193*51+193*49
=100*193
=19300
25*32
=25*4*8
=800
79*16+79*78+79*6
=(16+78+6)*79
=100*79
=7900
25*32
=25*4*8
=800
193*51+193*49
=100*193
=19300
369*136-36*369
=100*369
=36900
33*145+33*55
=(145+55)*33
=200*33
=6600
1.45+15×6= 135
2.250÷5×8=400
3.6×5÷2×4=60
4.30×3+8=98
5.400÷4+20×5= 200
6.10+12÷3+20=34
7.(80÷20+80)÷4=21
8.70+(100-10×5)=120
9.360÷40+10= 19
10.40×20-200= 600
11.（80-25）*2= 110
12.70+45=115
13.90×2÷3= 60
14.16×6÷3= 32
15.300×6÷9= 200
16.540÷9×7=420
17.30×20÷15= 20
18.400÷4×7= 700
19.（350-80）÷9= 30
20.160+70+50=280
21.18-64÷8= 10
22.42÷6+20=27
23.40-5×7= 5
24.80+60÷3=100
25.41+18÷2= 50
26.75-11×5= 20
27.42+7-29= 20
28.5600÷80=70
29.25×16÷4= 100
30.120×25÷5= 600
31.36×11÷3= 132
32.1025÷25×8=328
33.336+70-6= 400
34.25×9×4= 900
35.200-33×3= 101
36.3020-1010=2010
37.12×50+10= 610
38.25×8+199= 399
39.23×11-13= 240
40.125÷25-5=0
41.4200-2200+200=2200
42.220+80-150=150
43.20×8×5= 800
44.600-3×200=0
45.20+20÷2= 30
46.35-25÷5= 30
47.36+8-40= 4
1）25%*132+1/4*8 2)32*0.125*25
=1/4*132+1/4*8 =(4+8)*0.125*25
=1/4*(132+8) =(4*25)*(8*0.125)
=1/4*140 =100*1
=35 =1000
3)75%*76+25*4+0.75*12
=3/4*76+3/4*12+25*4
=3/4*88+100
=166
4)3200*1/8÷2/5+1270 5)(2/3+4/5)*7/6
=400*5/2+1270 =22/15*7/6
=1000+1270 =77/45
=2270
5)6*(1/2+2/3) 6)132*(44÷176)
=6*1/2+6*2/3 =132*1/4 =33
=3+4
=7 7)72.25%*99+75.25%
=75.25%*99+75.25%*1
=75.25%*(99+1)
=75.25%*100
=75.25
①2700×（506－499）÷900 ②33.02－（148.4－90.85）÷2.5
=2700×7÷900 =33.02－57.55÷2.5
=18900÷900 =33.02－23.02
=21 =10
③（1÷1－1）÷5.1 ④18.1＋（3－0.299÷0.23）×1
=（1－1）÷5.1 =18.1＋1.7x1
=0÷5.1 =18.1＋1.7
=0 =19.8
/ =除號 *=乘號
五年級簡算題急呀
簡算 45.55 6.82 15.55 34.52 17.87 12.23 6.43 1.4 0.57 23.75 8.64 3.46 17.83 9.5 7.83 0.5 5.38 88.2 2.38 1.8 27.38 5.34 2.62 4.66 21.63 8.5 9.63 7.5 2.45...
五年級分數簡單簡便計算60道，五年級分數簡便計算200道（加減法，不要網上搜的），還有應用題，60道
1,18 7 19 19 1 7 19 7 1 19 2,80 7 79 79 1 7 79 7 1 79 3,78 5 79 79 1 5 79 5 1 79 4,1 2 1 6 1 12 1 20 1 30 1 42 1 2 1 2 1 3 1 3 1 4 1 4 1 5 1 5 1 6 1 6...
小學五年級簡算題100道
420 35 25 12 135 0.5 3 4 1 4 2 4 9 3 2 3 3 4 1 2 1 6 1 2 1 6 7.5 2.5 3.8 7 8 3 8 3 10 1 5 4 5 7 10 2 1 6 1 3 0.51 17 32.8 19 5.2 1.3 1.6 0.4 4.9 0.7 1...