50道五年级脱式计算题带过程和答案，有答案和过程的加分，谢谢了。

Question

能帮解决一下吗？急！！！急用啊！！！

Answer 1

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 =0.15
5.8×（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 = 4/2 = 2

参考资料：http://iask.sina.com.cn/b/14646620.html?retcode=0

Answer 2

50道五年级脱式计算题带过程和答案，有答案和过程的加分，谢谢了。
能帮解决一下吗？急！！！急用啊！！！
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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
=83
1.24+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
I32×125×25
=4×8×125×25
=（4×25）×（8×125）
=100×1000
=100000令
编辑于 2019-07-27
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100道五年级脱式计算题带答案和过程都有哪些？
5.4÷1.8+240×1.5=3+360=363 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=22.51.24+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=48 2/5-(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=83 1.24+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=7.1721.24+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=48 2/5-(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 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 = 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 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 =0.15 5.8×（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 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 = 161.65180－705×6 = 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 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
1584赞·6,433浏览2020-03-06
脱式计算题50道带答案和过程
1、 1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 2、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 3、1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5 4、4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48 5、2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8 6、3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7 7、3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1 8、0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000 9、1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 10、9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 11、1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9 12、9999×1001=9999×(1000+1)=9999×1000+9999×1=10008999 13、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=83 14、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 15、933-157-43=933-(157+43)=933-200=733 16、4821-998=4821-1000+2=3823 17、32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=100000 18、1.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.65 19、6.5×8+3.5×8-47=52+28-47=80-47 20、3.7x2.56-2.3=9.472-2.3=7.172 21、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 22、1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5 23、4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48 24、2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8 25、3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7 26、3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1 27、0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000 28、1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5 29、9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2 30、1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9 31、9999×1001=9999×(1000+1)=9999×1000+9999×1=10008999 32、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=83 33、1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78 34、933-157-43=933-(157+43)=933-200=733 35、4821-998=4821-1000+2=3823 36、32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=100000 37、1.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.65 38、6.5×8+3.5×8-47=52+28-47=80-47 39、3.7x2.56-2.3=9.472-2.3=7.172 40、1.65×99+1.65 =1.65*（99+1）=1.65*100=165
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求100道五年级脱式计算题带答案和过程
五年级上册脱式题带答案 求100道五年级脱式计算题 178×101－178 84×36+64×84 75×99+2×75 83×102－83×2 98×199 123×18－123×3+85×123 50×(34×4)×3 25×（24+16） 178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75
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小学五年级小数脱式简便计算题带答案有哪些？
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 【简便计算】 简便计算是一种特殊的计算，它运用了运算定律与数字的基本性质，从而使计算简便，使一个很复杂的式子变得很容易计算出得数。 【脱式计算】 即递等式计算，需将一系列的数字逐步计算。在脱式计算中要先算乘、除法，后算加、减法。在乘除法连继计算时中，要按从左往右的顺序依次计算，在四则运算中，加法和减法叫做第一级运算，乘法和除法叫做第二级运算。 【注意事项】 在进行简便运算（ 四则运算）时，应注意运算符号（乘除和加减）和大、中、小括号之间的关连。不要越级运算，以免发生运算错误。 【乘法分配律】 简便计算中最常用的方法是 乘法分配律。乘法分配律指的ax(b+c)=axb+axc其中a,b,c是任意实数。相反的，axb+axc=ax(b+c)叫做乘法分配律的逆运用（也叫提取 公约数），尤其是a与b互为补数时，这种方法更有用。
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50道简便计算题及答案五年级
用简便方法计算. 1、368＋2649＋1351 2、 87＋101＋113 3、24＋127＋476＋573 4、400－273－127 5、327＋（96－127） 6、72×98 7、999＋99＋9 8、442－103－142 9、67×5×2 10、25×（78×4） 11、72×125 12、9000÷125÷8 13、400÷25 14、25×36 15、103×27 16、76×102 17、3600÷25÷4 18、99×35 19、（25＋12）×4 20、56×27＋27×44 21、56×99＋56 22、125×25×8×4 23、25×32×125 24、125×64 （1）（78＋61）＋39 （2）700－82－18 （3）348＋163＋242＋410＋537 （4）125×47－47×25 （5）201×316 （6）374－205＋226－95 （7）3000－999 （8）997×7＋21 （9）87×470＋870×53 （10）（55＋55＋55＋55×5）×125 （11）125×（8＋40）×25 (12）99＋49×99 （13）265×97＋4×265 （14）454＋999×999＋545 （15）9999×36＋6666×3×32 （16）124×38＋65×124＋76×110－76×7 （17）62×4＋44×5＋5×18 （18）3400－62×34－38×20－38×14 （19）1992×19911991-1991×19901990
195赞·1,986浏览2018-02-09
数学，好老师1对1教出好成绩.0元试听

根据文中提到的五年级为您推荐
数学，掌门1对1拥有10000+教研人员，1对1针对性教学，查缺补漏，快速提升!数学，初高中在线1对1辅导，好老师1对1辅导教出好成绩。
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12条回答·5,422人在看
哪些特质能给你的吸引力加分？
听多了花若盛开，蝴蝶自来的客套话，我们切换成世俗频道去说怎么吸引他人注意，无非就是看颜值看才华看气质了吧…… 你好看你有理 在这个看脸的社会，颜值无疑是块颇有份量的敲门砖。研究显示，外

Answer 3

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
=83
1.24+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
I32×125×25
=4×8×125×25
=（4×25）×（8×125）
=100×1000
=100000令

Answer 4

下次自己做题，我可不帮你了！
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
=83
1.24+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
=48
2/5-(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
=83
1.24+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
=48
2/5-(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
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

Answer 5

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= 9
10.40×20= 800
11.80-25= 55
12.70+45=115
13.90×2= 180
14.16×6= 96
15.300×6= 1800
16.540÷9=60
17.30×20= 600
18.400÷4= 100
19.350-80= 270
20.160+70=230
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= 400
30.120×25= 3000
31.36×11= 396
32.1025÷25=41
33.336+70= 406
34.25×9×4= 900
35.200-33×3= 101
36.3020-1010=2010
37.12×50= 600
38.25×8= 200
39.23×11= 253
40.125÷25=5
41.4200-2200=2000
42.220+80= 300
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
48.2800÷40=70
49.98÷14 = 7
50.96÷24 = 4