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38 광고문의 0422 258 092, 0432 008 985 admin@qldkoreanlife.com.au 김선생 연습문제&풀이 ⓒ본광고이미지는코리안라이프가제작하였습니다. *정답은40p에있습니다. ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡”” ሻ 1 2 + 2 − 4 − 7 = 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = (−2) −2 × (−3) 5 1−2+5 −2 2+5 = −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) = ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 = ( 2 − 2 ) ( 2 + 2 ) = − ( + ) ( 2 + 2 ) ሺͻሻ ͷͶͲʹ ൌ ʹ ൈ ʹ͹Ͳͳ ൌ ʹ ൈ ͵͹ ൈ ͹͵ ൌ ͹Ͷ ൈ ͹͵ Š‡ ’ƒ‰‡ —„‡”• ƒ”‡ ͹͵ ƒ† ͹ͶǤ ‡…ƒ—•‡ ‹– ‹• ˜‡”› Šƒ”† –‘ ˆ‹† ʹ͹Ͳͳ ൌ ͵͹ ൈ ͹͵ǡ ‹– –ƒ‡• Ž‘‰ –‹‡ –‘ •‘Ž˜‡Ǥ ‹’Ž‹‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡” ሻ 1 2 + 2 − 4 − 7 = 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = (−2) −2 × (−3) 5 1−2+5 −2 2+5 = −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) = ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 = ( 2 − 2 ) ( 2 + 2 ) = − ( + ) ( 2 + 2 ) ሺͻሻ ͷͶͲʹ ൌ ʹ ൈ ʹ͹Ͳͳ ൌ ʹ ൈ ͵͹ ൈ ͹͵ ൌ ͹Ͷ ൈ ͹͵ Š‡ ’ƒ‰‡ —„‡”• ƒ”‡ ͹͵ ƒ† ͹ͶǤ ‡…ƒ—•‡ ‹– ‹• ˜‡”› Šƒ”† –‘ ˆ‹† ʹ͹Ͳͳ ൌ ͵͹ ൈ ͹͵ǡ ‹– –ƒ‡• Ž‘‰ –‹‡ –‘ •‘Ž˜‡Ǥ ‹’Ž‹ˆ› –Š‡‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) 2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…––‘”‹••‡ –Š‡ ˆ‘‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡” ሻ 1 2 + 2 − 4 − 7 = 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = (−2) −2 × (−3) 5 1−2+5 −2−2+5 = −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) = ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 = ( 2 − 2 ) ( 2 + 2 ) = − ( + ) ( 2 + 2 ) ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡” ሻ 1 2 + 2 − 4 − 7 = 2 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = 5 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = ( 2) −2 × ( 3) 5 1−2+5 −2 2+5 −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) 6 4 2 − 9 2 (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 3 7 − − + = ( − ) − ( − ) = ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 = ( 2 − 2 ) ( 2 + 2 ) − ( + ) ( 2 + 2 ) ሺͻሻ ͷͶͲʹ ൌ ʹ ൈ ʹ͹Ͳͳ ൌ ʹ ൈ ͵͹ ൈ ͹͵ ൌ ͹Ͷ ൈ ͹͵ Š‡ ’ƒ‰‡ —„‡”• ƒ”‡ ͹͵ ƒ† ͹ͶǤ ‡…ƒ—•‡ ‹– ‹• ˜‡”› Šƒ”† –‘ ˆ‹† ʹ͹Ͳͳ ൌ ͵͹ ൈ ͹͵ǡ ‹– –ƒ‡• Ž‘‰ –‹‡ –‘ •‘Ž˜‡Ǥ ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽ‘™‹ ‰• ሺͷǦͺሻ 5 + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™™‡” ሻ 1 2 + 2 − 4 − 7 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 4 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 (−2) −2 × (−3) 5 1−2+5 −2 2+5 = −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 −8 × 4 ÷ 8 3+2−6 6+2−(−6) = 4 −1 14 5 + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 ( 2 − 2 ) ( 2 + 2 ) = − ( + ) ( 2 + 2 ) ሺͻሻ ͷͶͲʹ ൌ ʹ ൈ ʹ͹Ͳͳ ൌ ʹ ൈ ͵͹ ൈ ͹͵ ൌ ͹Ͷ ൈ ͹͵ Š‡ ’ƒ‰‡ —„‡”• ƒ”‡ ͹͵ ƒ† ͹ͶǤ ‡…ƒ—•‡ ‹– ‹• ˜‡”› Šƒ”† –‘ ˆ‹† ʹ͹Ͳͳ ൌ ͵͹ ൈ ͹͵ǡ ‹– –ƒ‡• Ž‘‰ –‹‡ –‘ •‘Ž˜‡Ǥ ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡‡ ˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ ••™‡” ሻ 1 2 + 2 − 4 − 7 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 6 − 15 + 4 + (−10 − 18 − 16) −5 44 3 −2 × (−2 ) − × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 (−2) −2 × (−3) 5 1−2+5 −2−2+5 −60.7 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 1 14 5 − + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) = ( − )( − ) 8 4 − 4 = ( 2 ) 2 − ( 2 ) 2 = ( 2 2 ) ( 2 + 2 ) − ( + ) ( 2 + 2 ) ሺͻሻ ͷͶͲʹ ൌ ʹ ൈ ʹ͹Ͳͳ ൌ ʹ ൈ ͵͹ ൈ ͹͵ ൌ ͹Ͷ ൈ ͹͵ Š‡ ’ƒ‰‡ —„‡”• ƒ”‡ ͹͵ ƒ† ͹ͶǤ ‡…ƒ—•‡ ‹– ‹• ˜‡”› Šƒ”† –‘ ˆ‹† ʹ͹Ͳͳ ൌ ͵͹ ൈ ͹͵ǡ ‹– –ƒ‡• Ž‘‰ –‹‡ –‘ •‘Ž˜‡Ǥ ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 (−2 2 ) 3 × ( ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 + ሺ ͸ǡ ͹ 학년 ሻ 6 4 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡” ሻ 1 2 + 2 − 4 − 7 2 − 4 + 2 − 7 = −2 − 5 2 2 3 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 (−2) −2 × (−3) 5 1−2+5 −2−2+5 = −60.75 4 4 (−2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 −8 × 4 ÷ 8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) 6 4 2 − 9 2 = (2 ) 2 −(3 ) 2 = (2 − 3 ) 2 + 3 7 − − + = ( − ) − ( − ) ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽ‘™‹‰•• ሺͳǦͶሻ 1 2 + 2 − 4 − 7 ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 −2 × (−2 ) −2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 ( 2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆ‘ŽŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ •™‡” ሻ 1 2 + 2 − 4 − 7 2 − 4 + 2 − 7 = −2 − 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = (−2) −2 × (−3) 5 1−2+5 −2 2+5 = −60.75 4 4 (−2 2 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 = (−2) 3 3 6 × 2 2 2 2 ÷ (−2) 3 ÷ 6 ÷ −6 = −8 × 4 ÷ −8 3+2−6 6+2−(−6) = 4 −1 14 5 − + = ( − + ) ‹’Ž‹ˆ› –Š‡ ˆ‘ŽŽŽ‘™‹‰• ሺͳǦͶሻ 1 2 + − 4 − 7 ሺ ͸ ǡ ͹ 학년 ሻ 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) ሺ ͸ ǡ ͹ 학년 ሻ 3 − × 2 ) 2 × (−3 ) 5 ሺ ͺǡ ͻ 학년 ሻ 4 ( 2 2 ) 3 × (2 ) 2 ÷ (−2 2 −2 ) 3 ሺ ͻǡ ͳͲ 학년 ሻ ƒ…–‘”‹•‡ –Š‡ ˆˆ‘ŽŽ‘™‹‰• ሺͷǦͺሻ 5 − + ሺ ͸ǡ ͹ 학년 ሻ 6 4 2 − 9 2 ሺ ͺ 학년 ሻ 7 − − + ሺ ͻ 학년 ሻ 8 4 − 4 ሺ ͳͲ 학년 ሻ ሺͻሻ Š‡ ‹–Š ‘’‡• ƒ „‘‘ǡ –Š‡ ’”‘†—…– ‘ˆ –Š‡ –™‘ ’ƒ‰‡ —„‡”• ‹• ͷͶͲʹ Šƒ– ƒ”‡ –Š‡ ’ƒ‰‡ —„‡”• ǫ 김선생수학알제브라연습문제 ሺʹ͸ͺሻ ሺ š‡”…‹•‡ ‘ˆ Ž‰‡„”ƒ ሻ ሺ •™‡”” ሻ 1 2 + 2 − 4 − 7 = 2 − 4 + 2 − 7 −2 5 2 2 3 − 5 − 3 5 + 6 + 2(2 − 8 ) = 6 − 10 − 15 − 18 + 4 − 16 = 6 − 15 + 4 + (−10 − 18 − 16) = −5 − 44 3 −2 × (−2 ) −2 × (−3 ) 5 = −2 × (−2) −2 −2 −2 × (−3) 5 × 5 × 5 = (−2) −2 × (−3) 5 1−2+5 −2−2+5 = −60.75 4