1樓:精銳
0.68*24-0.67*24=(0.68-0.67)*24=0.01*24=0.24
2009*20102010-2010*20092009=2009*(20102010-20092009)+20092009=2009*10001+20092009=20092009*2=40184018
2樓:生石灰
分別是0.24和4038090 求採納,謝謝!_
3樓:229雲怡
0.68x24-0.67x24=24x(0.68-0.67)=0.024
2009x20102010-2010x20092009=(2009+1-1)x20102010-2010x20092009=2010x20102010-2010x20092009-20102010=2010x(20102010-20092009)-20102010=2010x10001-20102010=0
4樓:金牛神是我
第一題:原式=(0.68-0.67)×24=0.24
第二題:原式=2009×2010×10001-2010×2009×10001=0
計算題用簡便方法計算
5樓:丶只有你懂我丶
你好,你的題目麻煩發一下,謝謝。
6樓:不帥的西門春雪
就是綜括號1-括號1/4+1/4括號,中括號除以1/4等於多少?
7樓:廉靜晨
4/5+94/5+994/5=9994/5÷99994/5
十道簡便計算帶答案
8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
9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
10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。
11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
12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
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