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        rg2024-09-28 06:42:33 С ҪͶ
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        СԇW}

        Dg3·ݼYСuƽˎWМʂ؅ӿԇYJBYSСPСԇW}gӭϣW俼!˽PϢՈmPע҂îIӖW!

        СԇW}

        1.СļﵽWУÿ50tõnrg;ÿ60txnrg߀2СļﵽWУжh?

        룺ÿ50׵ĵУrgȰɷNٶ·(60×2)֪ÿ(60-50)ף@ͿСÿ50׵ĵУrg

        ⣺60×2÷(60-50)=12()

        50×12=600()

        СļﵽWУ600

        2.һL600׵ĭhܵҶͬrͬͬÿ300ÿ400^׷状˵һ?

        룺֪l֪˵һrұȼ׶һܣ600֪ÿ犱ȼ׶(400-300)һr^ĕrg

        ⣺600÷(400-300)

        =600÷100

        =6()

        𣺽^6犃˵һ

        3.һLμֻL2ףe8ƽ;ֻь2e12ƽס@LμԭeǶ?

        룺“ֻь2e12ƽ”ԭLǣ(12÷2)ͬԭČ(8÷2)L͌ԭe

        ⣺(12÷2)×(8÷2)=24(ƽ)

        @Lμԭe24ƽס

        4.IO3ǧ20Ԫһ7.4ԪÿǧO2.4ԪÿǧԪ?

        룺ȥX31ǧO1ǧĿX@Xȥ1ǧOXÿǧX

        ⣺(20-7.4)÷3-2.4

        =12.6÷3-2.4

        =4.2-2.4

        =1.8(Ԫ)

        ÿǧ1.8Ԫ

        5.҃ͬr135ǧ׵ăɵ^3Сr׵ٶҵ2҃ÿСrжǧ?

        룺}֪ٶȺ(135÷3)ǧ@ٶȺҵٶȵ(2+1)

        ⣺135÷3÷(2+1)=15(ǧ)

        15×2=30(ǧ)

        𣺼ÿСrքe30ǧ15ǧס

        6.ͬӔĿĺͰÿȡ85ȡ״Ժ]߀ʣ12һȡˎ״?ﹲжق?

        룺ɷNĔĿȡr߀ʣ12fȡ12ÿζȡ(8-5)һȡˎ״Ρ

        ⣺12÷(8-5)=4()

        8×4+5×4+12=64()

        8×4×2=64()

        һȡ4Σﹲ64

        7.6r܇վͬrl1·2·܇1·܇ÿ12犰lһΣ2·܇ÿ18犰lһ´ͬrl܇rg

        룺1·2·´ͬrl܇r^ĕrg횼12ֵı18ֵıҲС

        ⣺1218С36

        6r+36=6r36

        ´ͬrl܇rg6r36

        8.H45qӽ15qǰHgǃg11?

        룺gIJ(45-15)qHgǃg11r@ǃg(11-1)ɴ˿ӶٚqrHǃg11֪ꃺ15qɂqIJĆ}

        ⣺(45-15)÷(11-1)=3(q)

        15-3=12()

        12ǰHgǃg11

        9.ώһUPƽֽo2ͬW1֧ƽֽo3ͬW2֧ƽֽo4ͬW3֧ƽֽo5ͬW4֧@UPж֧?

        룺}⣬Ԍ}еėlD飺ƽֽo2ͬW3ͬW4ͬW5ͬWһ֧ˣ2345Сٜpȥ1ҪĆ}

        ⣺2345С60

        60-1=59(֧)

        @UP59֧

        10.һKƽ߅εֻѵ8ףֻѸ5e40ƽ@Kƽ߅εԭe?

        룺ֻѵ8e40ƽף ԭƽ߅εĸֻѸ5e40ƽԭƽ߅εĵԭĵ׳ԭĸ߾Ҫe

        ⣺(40÷5)×(40÷8)=40(ƽ)

        ƽ߅εԭe40ƽ

        СԇW}𰸡P£

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