1樓:妖精末末
6/7÷2=【 3/7】
2/5× 2=【4/5 】
1÷2/3=【3/2 】
4-1/4=【3又3/4 】
7/8÷1=【7/8 】
1/3×1/4=【1/12 】
0×8/9=【 0】
2樓:劉向陽盼盼
6/7÷2=【 3/7 】
2/5× 2=【 4/5 】
1÷2/3=【 3/2 】
4-1/4=【3又3/4 】
7/8÷1=【7/8 】
1/3×1/4=【1/12 】
0×8/9=【 0 】
回答完畢
計算脫式 (5/6-1/4*2/3)÷1/6 (3/8-1/4)÷(8/9*3/4) 18/35÷0.6*2/3 7/8*【1÷(7/10-7/20)】 下面
3樓:匿名使用者
(5/6-1/4*2/3)
÷1/6
=(5/6-1/6)
=5/6×6/1-1/6×6/1
=5-1
=4(3/8-1/4)÷(8/9*3/4)=(3/8-1/4)÷2/3
=3/8×3/2-1/4×3/2
=9/16-3/8
=9/16-6/16
=3/16
或=(3/8-1/4)÷2/3
=1/8×3/2
=3/16
18/35÷0.6*2/3
=18/35÷3/5×2/3
=18/35×5/2
=9/7
7/8*【1÷(7/10-7/20)】
=7/8×[1÷7/20]
=7/8×[1×20/7]
=7/8×20/7
=5/2
4.67-(2.98+0.67)
=4.67-2.98-0.67
=4-2.98
=4-(3-0.02)
=4-3+0.02
=1.02
7.85*99+7.85
=7.85(99+1)
=7.85×100
=785
(51+34/39)*2/17
=51*2/17+34/39*2/17
=3*2+4/39
=6+4/39
=6又4/39
7.5*0.4*25*0.8
=25*0.3*0.4*25*0.2*4
=25*4*25*0.4*0.3*0.2
=100*10*0.06
=60102*7.8
=(100+2)*7.8
=780+15.6
=795.6
14.28÷3.5÷2
=14.28÷(3.5*2)
=14.28÷7
=2.04
2/3*1/15+14/15*2/3
=2/3(1/15+14/15)
=2/3×1
=2/3
97*97/98
=97×(1-1/98)
=97-97/98
=96又1/98
4樓:我不是他舅
(5/6-1/4*2/3)÷1/6
=(5/6-1/6)×
6=4/6×6
=4(3/8-1/4)÷(8/9*3/4)=1/8÷2/3
=1/8×3/2
=3/16
18/35÷0.6*2/3
=18/35×5/3×2/3
=6/7×2/3
=4/7
7/8*【1÷(7/10-7/20)】
=7/8×1÷7/20
=7/8×20/7
=5/2
4.67-(2.98+0.67)
=4.67-0.67-2.98
=4-2.98
=1.02
7.85*99+7.85
=7.85×(99+1)
=7.85×100
=785
計算下面各題,能簡算的要簡算。 45×(3/5+5/9) 3/14÷【6/7×(1/3+1/4)】 (7/3+7/4-7/12)×6/7
5樓:匿名使用者
45×(3/5+5/9) = 45×8/9 = 40
3/14÷【6/7×(1/3+1/4)】= 3/14÷【6/7×12/7】= 3/14÷2 = 3/28
(7/3+7/4-7/12)×6/7 = 7/3×6/7+7/4×6/7-7/12×6/7 = 2+3/2-1/2 = 3
(2/3-5/9×3/5)÷7/16 =(2/3-1/3)÷7/16 = 1/3*16/7 = 16/21
1/9×3+1/9×5+1/9 = 3/9+5/9+1/9 = 9/9 = 1
7/8×3/7+7/8 = 3/8+7/8 = 10/8 = 5/4
(1/2+11/8×3/2)÷1/2 = (1/2+11/8×3/2)×2 = 1/2×2+11/8×3/2×2 = 1 + 33/8 = 41/8
(1/3+1/5+1/15)×15 = 1/3×15 +1/5×15+1/15×15 = 5+3+1 = 9
簡便計算: 1. 3.625÷5/32+6又2/5×3/8+6.4 2. 45÷5/8+1.6+4.4×1又3/5 3. 8/9×【3/4-(7/16-0.25)】
6樓:匿名使用者
1. 3.625÷5/32+6又2/5×3/8+6.4=3.625×32/5+
6.4×3/8+6.4×1
=3.625×6.4+6.4×0.375+6.4×1=6.4×(3.625+0.375+1)
=6.4×5
=322. 45÷5/8+1.6+4.
4×1又3/5=45×8/5+1.6×1+4.4×1.
6=45×1.6+1.6×1+4.
4×1.6=1.6×(45+1+4.
4)=1.6×50.4
=1.6×(50+0.4)
=1.6×50+1.6×0.4
=80+0.64
=80.64
3. 8/9×【3/4-(7/16-0.25)】=8/9×【3/4-(7/16-1/4)】=8/9×【3/4-7/16+1/4】
=8/9×【3/4+1/4-7/16】
=8/9×【1-7/16】
=8/9×9/16
=1/2
4. 6.3×29又4/5+2.98×37=6.3×29.8+2.98×37
=63×2.98+2.98×37
=2.98×(63+37)
=2.98×100
=298
5. 3.6×31又2/5+314×0.
63+3.14=3.6×31.
4+314×0.63+3.14=36×3.
14+3.14×63+3.14×1=3.
14×(36+63+1)
=3.14×100
=314
6. 72×61又3/10+73.8*2又4/5=72×61.3+73.8×2.8
=72×61.3+(72×1.025×2.8)=72×61.3+72×(1.025×2.8)=72×61.3+72×2.87
=72×(61.3+2.87)
=72×64.17
=4620.24
7. 1/5+51/5+501/5+5001/5+50001/5=1/5+10又1/5+100又1/5+1000又1/5+10000又1/5
=(10+100+1000+10000)+(1/5+1/5+1/5+1/5+1/5)
=11110+1
=11111
7樓:妙酒
1. 3.625÷5/32+6又2/5×3/8+6.4=3又5/8x32/5+32/5x3/8+6.4=(3又5/8+3/8)x6.4+6.4
=4x6.4+6.4
=(4+1)x6.4
=5x6.4
=322. 45÷5/8+1.6+4.4×1又3/5=45x8/5+8/5+4.4x8/5
=(45+1+4.4)x8/5
=(50+0.4)x8/5
=50x8/5+0.4x8/5
=80+0.64
=80.64
3. 8/9×【3/4-(7/16-0.25)】=8/9x(3/4-7/16+1/4)
=8/9x(1-7/16)
=8/9x9/16
=1/2
4. 6.3×29又4/5+2.98×37=6.3x29.8+29.8x0.1x37=29.8x(6.3+3.7)
=29.8x10
=298
5. 3.6×31又2/5+314×0.
63+3.14=3.6x31.
4+31.4x10x0.63+31.
4x0.1=31.4x(3.
6+6.3+0.1)
=31.4x10
=314
6. 72×61又3/10+73.8*2又4/5=72x61.3+73.8x2.8
=4413.6+206.64
=4620.24
7. 1/5+51/5+501/5+5001/5+50001/5=1/5+10又1/5+100又1/5+1000又1/5+10000又1/5
=10000+1000+100+10+1/5x5=11111
8樓:圍觀者
1.原式=3.625*(32/5)+(32/5)*0.375+32/5=(32/5)*(3.625+0.375+1)=(32/5)*5=32
2.原式=45*(8/5)+8/5+4.4*(8/5)=(8/5)*(45+1+4.4)=80.64
3.原式=8/9 *(3/4-7/16+1/4)=8/9 * 9/16=1/2
4.原式=6.3*29.8+2.98*37=2.98*(63+37)=2.98*100=298
5.原式=3.6*31.4+314*0.63+3.14=3.14*(36+63+1)=3.14*100=314
6.題沒抄錯吧
7.原式=1/5+10+1/5+100+1/5+1000+1/5+10000+1/5=11111
【簡算】 (3/4-2/3)÷1/5 4/5×7/8+7/8÷5 (1-8/15×3/4)÷3/5 (3/8+2/17)×8+1/17
9樓:新野旁觀者
(3/4-2/3)÷1/5
=1/12ch35
=5/12
4/5×
7/8+7/8÷5
=(4/5+1/50×7/8
=1×7/8
=7/8
(1-8/15×3/4)÷3/5
=(1-2/5)×5/3
=3/5×5/3
=1(3/8+2/17)×8+1/17
=3/8×8+(16/17+1/17)
=3+1=4
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