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40 qldkoreanlife.com.au FRI. 25. NOVEMBER. 1000 가로열쇠 1.다자란씩씩한남자 2.세상의온갖고생과어려움을다겪었음 5.말과소 7.실수가없도록말이나행동에마음을씀 9.실제의기능이나기술 10.화강암이풍화되어생긴흙 11.백성이고을의원을부르던말 12.나이가위인여자 13.문을옆으로밀어서열고닫는방식 14.짚으로꼬아줄처럼만든것 15.두부를만들고남은찌꺼기 17.권투에서,선수의팔길이 19.상품이시중에유통될수있는기한 20.우리나라동쪽의바다 세로열쇠 1.타격의달인.영원한3할타자 3.형세나세력이한창왕성한시기 4.전투를함께하는동료 6. [비밀친구]란뜻의이태리어 8.산삼을캐는것이직업인사람 9.거짓없이사실대로다말함 11.겉으로는비슷하나속은완전히다름 12.둘레의가부분 13.낚시끝에꿰는물고기의먹이 14.신입생,신출내기 16.대륙에둘러싸인바다 18.치료하여병을낫게함 낱말퍼즐 *정답은아래에있습니다. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 김선생 수학 이번호 정답 스도쿠 이번호 정답 낱말퀴즈 이번호 정답 *문제는40p에있습니다. Solve the followings (1-4) 1 13 − 3 = 3 + 8 − ( 6 , 7 학년 ) 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 ( 7, 8 학년 ) 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) ( 8, 9 학년 ) 4 2 2 + − 2 = − 2 − 6 + 4 ( 9, 10 학년 ) Factorise the followings (5-8) 5 5 + 20 − 30 ( 6, 7 학년 ) 6 2 − 4 − + 2 ( 8 학년 ) 7 4 2 − 12 + 9 2 ( 9 학년 ) 8 2 − 2 − 2 + 4 − 3 ( 10 학년 ) (9) The circumference of a circular track is 1200 m. Smith, John and White start at the same place and time. They race around the track with the speed of 600 m/min, 800 m/min and 900 m/min respectively. What is the least number of minutes it must take for all three to be together again ? 김선생수학알제브라연습문제 (268) ( Exercise of Algebra ) ( Answer ) 1 13 − 3 = 3 + 8 − 13 − 3 = 3 + 7 − 3 − 7 = 3 − 13 − 10 = − 10 ∴ = 1 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 6 + 2 + 3 = − 6 + 9 + 5 6 + 5 = − 1 + 9 6 − 9 = − 1 − 5 − 3 = − 6 ∴ = 2 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) 6 − 2 + 3 − 6 = − 6 + 2 + 8 − 12 9 − 8 = −10 + 2 9 + 10 = 2 + 8 19 = 10 ∴ = 10 / 19 4 2 2 + − 2 = − 2 − 6 + 4 2 2 + 2 + + 6 − 2 − 4 = 0 3 2 + 7 − 6 = 0 3 − 2 + 3 = 0 ∴ = 2/3 , − 3 5 5 + 20 − 30 = 5 (1 + 4 − 6 ) 6 2 − 4 − + 2 = 2 − 2 − ( − 2 ) = − 2 ( 2 − ) 7 4 2 − 12 + 9 2 = ( 4 2 − 12 + 9 2 ) = ((2 ) 2 − 2( 2 )( 3 ) + ( 3 ) 2 ) = ( 2 − 3 ) 2 8 2 − 2 − 2 + 4 − 3 = ( 2 −2 + 1) − ( 2 −4 + 4) = ( − 1) 2 − ( − 2) 2 = ( − 1) − − 2 {( − 1) + − 2 } = − + 1 ( + − 3) (9) Table below shows the positions of all three. time 1 2 3 4 5 6 7 8 9 10 11 12 13 Smith 600 1200 600 1200 600 1200 600 1200 600 1200 600 1200 600 John 800 400 1200 800 400 1200 800 400 1200 800 400 1200 800 White 900 600 300 1200 900 600 300 1200 900 600 300 1200 900 Therefore The least number of minutes is 12 min. Solve the followings (1-4) 1 13 − 3 = 3 + 8 − ( 6 , 7 학년 ) 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 ( 7 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) 4 2 2 + − 2 = − 2 − 6 + 4 ( 9, 10 Factorise the followings (5-8) 5 5 + 20 − 30 ( 6, 7 학년 6 2 − 4 − + 2 ( 8 학년 ) 7 4 2 − 12 + 9 2 ( 9 학년 ) 8 2 − 2 − 2 + 4 − 3 ( 10 학년 (9) The circumference of a circular track is 1200 m. Sm at the same place and time. They race around the track of 600 m/min, 800 m/min and 900 m/min respectively of minutes it must take for all three to be together again 김선생수학알제브라연습문제 (268) ( Ex ( Answer ) 1 13 − 3 = 3 + 8 − 13 − 3 = 3 + 7 − 3 − 7 = 3 − 13 − 10 = − 10 ∴ = 1 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 6 + 2 + 3 = − 6 + 9 + 5 6 + 5 = − 1 + 9 6 − 9 = − 1 − 5 − 3 = − 6 ∴ = 2 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) 6 − 2 + 3 − 6 = − 6 + 2 + 8 − 12 9 − 8 = −10 + 2 9 + 10 = 2 + 8 19 = 10 ∴ = 10 / 19 4 2 2 + − 2 = − 2 − 6 + 4 2 2 + 2 + + 6 − 2 − 4 = 0 3 2 + 7 − 6 = 0 3 − 2 + 3 = 0 ∴ = 2/3 , − 3 5 5 + 20 − 30 = 5 (1 + 4 − 6 ) 6 2 − 4 − + 2 = 2 − 2 − ( − 2 ) = − 2 ( 2 − ) 7 4 2 − 12 + 9 2 = ( 4 2 − 12 + 9 2 ) = ((2 ) 2 − 2( 2 )( 3 ) + ( 3 ) 2 ) = ( 2 − 3 ) 2 8 2 − 2 − 2 + 4 − 3 = ( 2 −2 + 1) − ( 2 −4 + 4) = ( − 1) 2 − ( − 2) 2 = ( − 1) − − 2 {( − 1) + − 2 } = − + 1 ( + − 3) (9) Table below shows the positions of all three. time 1 2 3 4 5 6 7 8 9 10 11 12 13 Smith 600 1200 600 1200 600 1200 600 1200 600 1 John 800 400 1200 800 400 1200 800 400 1200 80 White 900 600 300 1200 900 600 300 1200 900 60 Therefore The least number of minutes is 12 min. Solve the followings (1-4) 1 13 − 3 = 3 + 8 − ( 6 , 7 학년 ) 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 ( 7, 8 학년 ) 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) ( 8, 9 학년 ) 4 2 2 + − 2 = − 2 − 6 + 4 ( 9, 10 학년 ) Factorise the followings (5-8) 5 5 + 20 − 0 ( 6, 7 학년 ) 6 2 4 − + ( 8 학년 ) 7 4 2 − 12 + 9 2 ( 9 학년 ) 8 2 − 2 − 2 + 4 − 3 ( 10 학년 ) (9) The circumference of a circular track is 1200 m. Smith, John and White start at the same place and time. They race around the track with the speed of 600 m/min, 800 m/min and 900 m/min respectively. What is the least number of minutes it must take for all three to be together again ? 김선생수학알제브라연습문제 (268) ( Exercis f Algebra ) (( Answer ) 1 13 − 3 = 3 + 8 − 13 − 3 = 3 + 7 − 3 − 7 = 3 − 13 − 10 = − 10 ∴ = 1 2 − 2 −3 − 1 + 3 = − 3 2 − 3 + 5 6 + 2 + 3 = − 6 + 9 + 5 6 + 5 = − 1 + 9 6 − 9 − 1 − 5 − = − 6 ∴ = 2 3 2 3 − 1 + 3 − 2 = − 2 3 − + 4(2 − 3 ) 6 − 2 + 3 6 = − 6 + 2 + 8 − 12 9 − 8 = −10 + 2 9 10 = 2 + 8 19 = 10 ∴ = 10 / 19 4 2 2 + − 2 = − 2 − 6 + 4 2 2 + 2 + 6 − − 4 = 0 3 + 7 − 6 = 0 3 − 2 + 3 = 0 ∴ = 2/3 , − 3 5 5 + 20 − 30 = 5 (1 + 4 − 6 ) 6 2 − 4 − + = 2 − 2 − ( − 2 ) = − 2 ( 2 − ) 7 4 2 − 12 + 9 2 = ( 4 2 − 12 + 9 2 ) = ((2 ) 2 − 2( 2 )( 3 ) + ( 3 ) 2 ) = ( 2 − 3 ) 2 8 2 − 2 − 2 + 4 − 3 ( 2 + 1) − ( 2 −4 + 4) = ( − 1) 2 − ( − 2) 2 = ( − 1) − − 2 {( − 1) + − 2 } = − + ( + − 3) (9) Table below shows the positions of all three. time 1 2 3 4 5 6 7 8 9 10 11 12 13 Smith 600 1200 600 1200 600 1200 600 1200 600 1200 600 1200 600 John 800 400 1200 800 400 1200 800 400 1200 800 400 1200 800 White 900 600 300 1200 900 600 300 1200 900 600 300 1200 900 Therefore The least number of minutes is 12 min.