十道簡便計算帶答案

2021-04-22 03:15:38 字數 5737 閱讀 9589

1樓:愛軍

(1)2.64×1.7-2.64×0.7

=2.64×(1.7-0.7)

=2.64×1

=2.64

(2)31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7

=3.15×(10.7-0.7)

=3.15×10

=31.5

(3)2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)

=2.7×10

=27(4)0.625÷0.125×0.8=(0.625×0.8)×8÷(0.128×8)=0.5×8÷1

=4(5)18.6×6.1+3.9×18.6=18.6×(6.1+3.9)

=18.6×10

=186

(6)1.3579+3.5791+5.7913+7.9135+9.1357

=(1+3+5+7+9)×1.1111

=25×1.1111

=27.7775

(7)52.5x2.9+5.45

=5.25x29+5.25+0.2

=5.25×(29+1)+0.2

=5.25×30+0.2

=157.5+0.3

=157.7

(8)0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=15(9)0.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

(10)400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

朋友,請及時採納正確答案,下次還可能幫到您哦,您採納正確答案,您也可以得到財富值,謝謝。

1.0.64×25×7.8+2.2

2.2÷2.5+2.5÷2

3.194-64.8÷1.8×0.9

4.36.72÷4.25×9.9

5.5180-705×6

6.24÷2.4-2.5×0.8

7.(4121+2389)÷7

8.671×15-974

9.469×12+1492

10.405×(3213-3189)

11.(25%-695%-12%)*36

12. 3/4*3/5+3/4*2/5

13. (1-1/4+8/9)/7/9

14 2/3+1/6/3/24+2/21

15 1*8/15*3/5

16 10-3/4/9/10-1/6

17 [(1/3+1/2)/5/6-1/3]/1/718 2/3/5+3/5/2+3/4

19 1/[(2-2/3/1/2)]*2/5

2樓:她是我的小太陽

1、 34×3.535-3.5×34.

34=34×3.5×1.01-3.

5×34×1.01=02、8+89+899+8999+89999=9+90+900+9000+90000-5=99999-5

=99994

3、0.67×2.1+0.

018×21+8.5×0.79=0.

67×2.1+0.18×2.

1+8.5×0.79=(0.

67+0.18)×2.1+8.

5×0.79=0.85×2.

1+0.85×7.9

=0.85×(2.1+7.9)

=0.85×10

=8.5

4、22222.2×9.99999

=22222.2×(10-0.00001)=222222-0.222222

=222221.777778

5、1997×19961996-1996×19971997=1997×1996×10001-1996×1997×10001=06、0.02+0.04+0.

06+0.08+……+19.94+19.

96+19.98

=(0.02+19.98)×999÷2

=10×999

=9990

7、99999×77778+33333×66666=99999×77778+99999×22222=99999×(77778+22222)

=99999×100000

=9999900000

8、(4又5/6-3又3/4)/(3/14+2/7)=13/12÷1/2

=13/6

=2又1/6

9、(4.8/1又4/5+3又1/2+7又1/3)×4/9=(2又2/3+7又1/3+3.5)×4/9=(10+3.5)×4/9

=13.5×4/9

=610、17.2/【(3又2/5-1.25)×2/3】=17.2/【2.15×2/3】

=17.2÷43/3

=1.2

3樓:楊晶晶

熱心網友你第四題錯了,應該是0.125乘8,不是0.128乘8,是2023年1月4日發的那個。

4樓:紫月開花

1、56+31+24 =(56+24)+31 =80+31 =111, 2、615+475+125 =615+(475+125) =615+600 =1215 3、125×64 =125×8×8 =1000×8 =8000 4、 89+101+111 =101+(89+111) =101+200 =301 5、24+127+476+573 =(24+476)+(127+573) =500+700 =1200 6、400-273-127 =400-(273+127) =400-400 =0 7、327+(96-127) =327-127+96 =200+96 =296 8、70×98 =70×(100-2) =7000-140 =6860 9、442-103-142 =442-142-103 =300-103 =197 10、999+99+9 =1000+100+10-3 =1110-3 =1107 11、67×5×2 =67×(5×2) =67×10 =670 12、25×(78×4) =25×4×78 =100×78 =7800 13、72×125 =9×(8×125) =9×1000 =9000 14、9000÷125÷8 =9000÷(125×8) =9000÷1000 =9 15、400÷25 =400÷100×4 =4×4 =16 16、25×36 =25×4×9 =100×9 =900 17、103×27 =(100+3)×27 =2700+81 =2781 18、76×102 =76×(100+2) =7600+152 =7752 19、3600÷25÷4 =3600÷(25×4) =3600÷100 =36 20、99×35 =(100-1)×35 =3500-35 =3465

5樓:匿名使用者

愛軍1978

2018-03-31 ta獲得超過2.6萬個贊關注(1)2.64×1.7-2.64×0.7=2.64×(1.7-0.7)

=2.64×1

=2.64

(2)31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7

=3.15×(10.7-0.7)

=3.15×10

=31.5

(3)2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)

=2.7×10

=27(4)0.625÷0.125×0.8=(0.625×0.8)×8÷(0.128×8)=0.5×8÷1

=4(5)18.6×6.1+3.9×18.6=18.6×(6.1+3.9)

=18.6×10

=186

(6)1.3579+3.5791+5.7913+7.9135+9.1357

=(1+3+5+7+9)×1.1111

=25×1.1111

=27.7775

(7)52.5x2.9+5.45

=5.25x29+5.25+0.2

=5.25×(29+1)+0.2

=5.25×30+0.2

=157.5+0.3

=157.7

(8)0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=15(9)0.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

(10)400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

朋友,請及時採納正確答案,下次還可能幫到您哦,您採納正確答案,您也可以得到財富值,謝謝。

1.0.64×25×7.8+2.2

2.2÷2.5+2.5÷2

3.194-64.8÷1.8×0.9

4.36.72÷4.25×9.9

5.5180-705×6

6.24÷2.4-2.5×0.8

7.(4121+2389)÷7

8.671×15-974

9.469×12+1492

10.405×(3213-3189)

11.(25%-695%-12%)*36

12. 3/4*3/5+3/4*2/5

13. (1-1/4+8/9)/7/9

14 2/3+1/6/3/24+2/21

15 1*8/15*3/5

16 10-3/4/9/10-1/6

17 [(1/3+1/2)/5/6-1/3]/1/718 2/3/5+3/5/2+3/4

19 1/[(2-2/3/1/2)]*2/5

6樓:杏苗苗

你們都市麗人醫院怎麼樣的呢,我的確是個很喜歡的人和人之間

7樓:

@李快來4您好:您的答案寫的非常正確!!!

8樓:匿名使用者

(1)2.64×1.7-2.64×0.7

=2.64×(1.7-0.7)

=2.64×1

=2.64

(2)31.5×1.07-3.15×0.7=3.15×10.7-3.15×0.7

=3.15×(10.7-0.7)

=3.15×10

=31.5

(3)2.7×5.7-2.7+5.3×2.7=2.7×(5.7-1+5.3)

=2.7×10

=27(4)0.625÷0.125×0.8=(0.625×0.8)×8÷(0.128×8)=0.5×8÷1

=4(5)18.6×6.1+3.9×18.6=18.6×(6.1+3.9)

=18.6×10

=186

(6)1.3579+3.5791+5.7913+7.9135+9.1357

=(1+3+5+7+9)×1.1111

=25×1.1111

=27.7775

(7)52.5x2.9+5.45

=5.25x29+5.25+0.2

=5.25×(29+1)+0.2

=5.25×30+0.2

=157.5+0.3

=157.7

(8)0.92x15+0.08x15

=(0.92+0.08)×15

=1×15

=15(9)0.72×1.25×2.5

=0.9×(0.8×1.25)×2.5

=0.9×1×2.5

=2.25

(10)400.6x7-2003x0.4

=200.3x14-200.3x4

=200.3×(14-4)

=200.3×10

=2003

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