1-2.2 整數的減法運算

(1)

(2)

(3)

뻣볆듮ꩫ-왛꧀

뻣볆ꪺꕛ듮 31 NOTE: PS. 要求學生記憶：「減一個數就是加上他的相反數」 NOTE: NOTE: #1 #2 #3

(4)

뻣볆듮ꩫ-왛꧀

뻣볆ꪺꕛ듮 32 NOTE: NOTE: Q. 為什麼可以先將 123456 和 123455 先拿來減? NOTE: #4 #5 #6

(5)

뻣볆ꪺ듮ꩫ - ꣒썄 (뙩뚥)

뻣볆ꪺꕛ듮 33 NOTE: Q. 듮굴ꪺ결꒰믲ꕩꕈ엜ꚨꕛꪺ? NOTE: #7 #8

(6)

ꝴꚳ떴맯귈ꪺꕛ듮륂뫢-왛꧀

뻣볆ꪺꕛ듮 34 NOTE: NOTE: NOTE: #9 #10 #11

(7)

ꝴꚳ떴맯귈ꪺꕛ듮륂뫢-왛꧀

뻣볆ꪺꕛ듮

35

NOTE:

(8)

뻣볆뉖Ꙙꕛ듮륂뫢_-_꣒썄_(뙩뚥)

뻣볆ꪺꕛ듮 36 NOTE: Q. 뫢ꚡ꒤ꚳ떴맯귈ꅁꕌꪺ륂뫢 뚶Ꟈ걏꙰꛳ꪺ? NOTE: NOTE: #13 #14 #15

(9)

뻣볆뉖Ꙙꕛ듮륂뫢_-_꣒썄_(뙩뚥)

뻣볆ꪺꕛ듮 37 NOTE: Q. ꚳꙮ둘뱨걁뢹껉ꅁ굮녱귾ꑀ 뱨ꪺ걁뢹뙽ꥬ군뫢? NOTE: Q. ꕨ걁뢹ꩫꭨꅇ (1) 걁뢹ꭥ걏ꖿ뢹ꅁꕨ걁뢹 ꒧ꯡ걏ꝟ엜뢹? (2) 걁뢹ꭥ띉굴뢹ꅁꕨ걁뢹 ꒧ꯡ걏ꝟ엜뢹? NOTE: Q. 냑ꛒ솿룑꒤ꡄ셠꓀ꪺꓨꩫꅁ ꝁꚳꡓꚳ뿬ꩫ꟤꣬ꡄꖭꞡꓱ 룻Ꟗꪺꓨꩫꥏ? #16 #17 #18

(10)

뻣볆뉖Ꙙꕛ듮륂뫢_-_꣒썄_(뙩뚥)

뻣볆ꪺꕛ듮 38 NOTE: Q. ꝑꗎꓥꓳ맏ꡄ꣒썄꒤돟앷듎 뉹꛽꒣돟앷쑸뉹ꪺꑈ볆ꚳ둘 ꑈ? NOTE: Q. ꖿ볆ꕛꑗꑀ귓ꭄ굴볆라꒣라 떥꧳ 0? #19 #20

(11)

(12)

뻇ꗍ뵭닟룑떪

負數與數線 #2ꅇ(1) –9 (2) –14 (3) –2 (4) 241 #3ꅇ(1) –6 (2) –4 #5ꅇ(1) –5434 (2) 88 (3) –890 #7ꅇ(1) 128 (2) –406 (3) 59 #8ꅇ297 #10ꅇ(1) 80 (2) 100 #11ꅇ970224 #13ꅇ(1) 28 (2)5 8 #14ꅇ(1) 17 (2) –35 #15ꅇ(1) <ꅆ> (2) <ꅆ> (3) =ꅆ= #16ꅇ3 #17ꅇ–9000 #18ꅇ(1) –5 (2) 70 ꕸ (3) 64 ꕸ (4) 18 ꕸ #19ꅇ40 #20ꅇ–4