一年级巧算加减法,(1一9)一(2一IO)一(3一11)一(4一I2)

Bonhams : A group of six editions from the Frostig Art Collection i. Charles Arnoldi, Crybaby, 2004ii. Michael C. McMillen, Maquette for the Studio, 2004iii. Sarah Perry, Speak for Me, 2004iv. Ken Price, Lunk, 2004v. Gwynn Murrill, Stretching Dog Maquette, 2004vi. Robert Graham, Untitled, 2005 i. 4 1/2 x 3 1/2 x 3 1/2 in. (11.4 x 8.9 x 8.9 cm); ii. 3 3/4 x 5 7/8 x 3 7/8 in. (9.5 x 14.9 x 9.8 cm); iii. 1 1/2 x 5 3/4 x 2 1/4 in. (3.8 x 14.6 x 5.7 cm); iv. 4 x 4 7/8 x 4 3/4 in. (10.2 X 12.4 X 12.1 cm); v. 3 x 7 1/2 x 1 1/2 in. (7.6 x 19 x 3.8 cm); vi. 4 1/2 x 2 7/8 x 2 1/4 in. (11.4 x 7.3 x 5.7 cm), dimensions of base 6 x 5 x 5 in. (15.2 x 12.7 x 12.7 cm)
(i.-v. from the edition of 200; vi. from the edition of 89. Each published by the Frostig Center, Pasadena, California.)
Lot Details
A group of six editions from the Frostig Art Collection i. Charles Arnoldi, Crybaby, 2004ii. Michael C. McMillen, Maquette for the Studio, 2004iii. Sarah Perry, Speak for Me, 2004iv. Ken Price, Lunk, 2004v. Gwynn Murrill, Stretching Dog Maquette, 2004vi. Robert Graham, Untitled, 2005 i. 4 1/2 x 3 1/2 x 3 1/2 in. (11.4 x 8.9 x 8.9 cm); ii. 3 3/4 x 5 7/8 x 3 7/8 in. (9.5 x 14.9 x 9.8 cm); iii. 1 1/2 x 5 3/4 x 2 1/4 in. (3.8 x 14.6 x 5.7 cm); iv. 4 x 4 7/8 x 4 3/4 in. (10.2 X 12.4 X 12.1 cm); v. 3 x 7 1/2 x 1 1/2 in. (7.6 x 19 x 3.8 cm); vi. 4 1/2 x 2 7/8 x 2 1/4 in. (11.4 x 7.3 x 5.7 cm), dimensions of base 6 x 5 x 5 in. (15.2 x 12.7 x 12.7 cm)
(CNY 45,308)
inc. premium
1 Nov 2016,
Lot Details
A group of six editions from the Frostig Art Collectioni. Charles Arnoldi, Crybaby, 2004ii. Michael C. McMillen, Maquette for the Studio, 2004iii. Sarah Perry, Speak for Me, 2004iv. Ken Price, Lunk, 2004v. Gwynn Murrill, Stretching Dog Maquette, 2004vi. Robert Graham, Untitled, 2005i.-v. signed and numbered '12/200' (on the underside); vi. initialed and numbered '2' (on the metal fastener on the underside) i.-v. vi. bronze on wooden base i. 4 1/2 x 3 1/2 x 3 1/2 in. (11.4 x 8.9 x 8.9 cm); ii. 3 3/4 x 5 7/8 x 3 7/8 in. (9.5 x 14.9 x 9.8 cm); iii. 1 1/2 x 5 3/4 x 2 1/4 in. (3.8 x 14.6 x 5.7 cm); iv. 4 x 4 7/8 x 4 3/4 in. (10.2 X 12.4 X 12.1 cm); v. 3 x 7 1/2 x 1 1/2 in. (7.6 x 19 x 3.8 cm); vi. 4 1/2 x 2 7/8 x 2 1/4 in. (11.4 x 7.3 x 5.7 cm), dimensions of base 6 x 5 x 5 in. (15.2 x 12.7 x 12.7 cm)i.-v. from the edition of 200; vi. from the edition of 89. Each published by the Frostig Center, Pasadena, California.
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速算与巧算(1)28.4*187-15.4*284+3.3*1.6&3.998/1.4*5.6/19.99&1+2-3+4+5-6+7+8+9+10+11-12+…+97+98-99&(199.9+19.99+1.999+0.1&*是乘法,/是除法,
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1)28.4*187-15.4*284+3.3*1.6=284*18.7-15.4*284+3.3*1.6=284*(18.7-15.4)+3.3*1.6=284*3.3+3.3*1.6=3.3*(284+1.6)=3.3*285.6=942.48 2)3.998/1.4*5.6/19.99=3.998÷19.99×(5.6÷1.4)=0.2×4=0.83)规律应该是:-3,-6,-12,-24,-48,-96,最后-99所以1+2+3+……+99=4950-3-6-12-24-48-96-99=-288则 答案为 =4373(先消掉3,6,9……再减去3,6,9……) 4)(199.9+19.99+1.999+0.1=(200-0.1+20-0.01+2-0.001+0.2-0.0001)/0.1111=(222.2-0.1111)/0./0.1111 - 0.1=1 -1=9
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巧算下面各题.(1)60×(12+14+512+215)(2)18×213+0.125×423+3×125%(3)817×225+217×925(4)11×2+12×3+…+118×19+119×20.
(1)60×(12+14+512+215)=60×12+60×14+60×512+60×215=30+15+25+8=45+25+8=70+8=78;(2)18×213+0.125×423+3×125%=0.125×213+0.125×423+3×0.125=0.125×(213+423+3)=0.125×10=1.25;(3)817×225+217×925=217×825+217×925=217×(825+925)=217×;(4)11×2+12×3+…+118×19+119×20=(1-12)+(12-13)+…+(118-119)+(119-120)=1-12+12-13+…+118-119+119-120=1-120=1920.
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