1樓:新野旁觀者
3.17+4.7+5.83+2.74+6.3+0.26
=(3.17+5.83)
62616964757a686964616fe59b9ee7ad9431333433643038+(2.74+0.26)+(6.3+4.7)+5.29
=9+3+11+5.29
=28.29
6.11+9.22+8.33+7.44+5.55+4.56+3.67+2.78+1.89
(1)9.26-4.38-2.62=9.26-(4.38+2.62)=9.26-7=2.26
(2)9.26-(4.38+2.26)= 9.26-2.26-4.38=7-4.38=2.62
(3)9.26-(4.38-2.74)= (9.26+2.74)-4.38=12-4.38=7.62
(1)4.75-9.64+8.25-1.36
(2)14.529+(2.471-3)
(3)38.68-(4.7-2.32)
(4)7.93+(2.8-1.93)
例3 計算下面各題
(1)8×25×1.25×0.04=(8×1.25)×(0.04×25)=10×1=10
(2)36÷12.5=(3600×8)÷(12.5×8)=28800÷100=288
(3)0.25×1.25×32=0.25×1.25×(4×8)= (4×0.25)×(1.25×8)=10
(1)64×12.5×0.25×0.05
(2)27÷0.25
(3)12.5×0.76×0.4×8×2.5
0.1+0.2+0.3+……+0.9+0.10+0.11+0.12+……+0.98+0.99
=(0.1+0.9)×9÷2+(0.10+0.99)×90÷2
=4.5+49.05
=53.55
計算 1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19
例5 計算下面各題
(1) 7.24×0.1+5×7.24+4.9×7.24=7.24×(0.1+5+4.9)=7.24×10=72.4
(2)1.25×67.875+125×6.7875+1.25×53.375
=1.25×67.875+1.25×678.75+1.25×53.375
=1.25×(67.875+678.75+53.375)
=1.25×800
=1000
(3)7.5×45+17×2.5
=7.5×(17+28)+17×2.5
=7.5×17+7.5×28+17×2.5
=17×(7.5+2.5)+7.5×4×7
=170+210
=380
用簡便方法計算
(1)383.75×7.9+79×61.625
(2)9.99×0.7+1.11×2.7
(3)6.25×0.16+264×0.0625+5.2×6.25+0.625×20
【課外拓展】用簡便方法計算下面各題
(1)34.5 8.23-34.5+2.77 34.5
(2)6.25 0.16+264 0.0625+5.2 6.25+0.625 20
(3)0.035 935+0.035+3 0.035+0.07 61 0.5
(4)19.98 37-199.8 1.9+1998 0.82
(5)1-0.1-0.01-0.001-0.0001-……-0.000000001
【走進賽題】
1、12.5×69+53×3.1+72×3.1
2、1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19
3、0.79×0.46+7.9×0.24+11.4×0.079
4、7.5×23+31×2.5
2樓:南笙雨辰
那個,你沒有題目麼?如果沒有的話你能不能把要求說具體一點,畢竟我都忘了五年級有什麼題了
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
3樓:匿名使用者
50道五年級脫式計算題帶過
4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
5樓:風兒在飄搖
我這隻有一道題,待會兒別怪我沒跟你們說。45÷5+27 等於13+27 等於40
6樓:匿名使用者
不用客氣,只要知道的就告訴你,我們不知道的,你只能等著下一個問你。
7樓:匿名使用者
對不起,給你說幾道就行了,因為給你說了,我們還要因為這個給你算題呀,我給你推版送一個,用作權業幫或者快對作業就行0.46×0.25×4
=0.25×4×0.4
=1×0.4
=0.4
132+12×37
=132+314
=446
319+32×56
=319+1512
=1831
250+23+38
=250+624
=874
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