1 / 20
1.
765脳
213梅
27
锛?/p>
765脳
327梅
27
瑙ｏ細鍘熷紡
=765梅
27脳
(213+327)= 765梅
27脳
540=765脳
20=15300
2.
(9999
锛?/p>
9997
锛?/p>
鈥?/p>
锛?/p>
9001)-(1
锛?/p>
3
锛?/p>
鈥?/p>
锛?/p>
999)
瑙ｏ細鍘熷紡
=
锛?/p>
9999-999
锛?/p>
+
锛?/p>
9997-997
锛?/p>
+
锛?/p>
9995-995
锛?/p>
+
鈥︹�?/p>
+(9001-1)
=9000+9000+
鈥︹�?/p>
.+9000
(500
涓?/p>
9000)
=4500000
3
锛?/p>
19xx19xx脳
19xx19xx-19xx19xx脳
19xx19xx
瑙ｏ細
锛?/p>
19xx19xx+1
锛?/p>
脳
19xx19xx-19xx19xx脳
19xx19xx
=19xx19xx脳
19xx19xx-19xx19xx脳
19xx19xx+19xx19xx
=19xx19xx-19xx19xx
=10000
4
锛?/p>
(873脳
477-198)梅
(476脳
874
锛?/p>
199)
瑙ｏ細
873脳
477-198=476脳
874
锛?/p>
199
鍥犳鍘熷紡
=1
5
锛?0xx脳19xx
-
19xx脳19xx锛?9xx脳19xx
-
19xx脳1996锛嬧�︼紜2脳1
瑙ｏ細鍘熷紡锛?9xx脳锛?/p>
20xx
锛?/p>
19xx
锛夛紜19xx脳锛?/p>
19xx
锛?/p>
1996
锛夛紜鈥?/p>
锛?脳锛?/p>
4
锛?/p>
2
锛夛紜2脳1
锛濓紙
19xx
锛?/p>
19xx
锛嬧�︼紜
3
锛?/p>
1
锛壝?锛?/p>
20xx000
銆?/p>
6
锛?/p>
297
锛?/p>
293
锛?/p>
289
锛嬧�︼紜
209
瑙ｏ細锛?/p>
209+297
锛?/p>
*23/2=5819
7
锛庤绠楋細
瑙ｏ細鍘熷紡
=
锛?/p>
3/2
锛?/p>
*
锛?/p>
4/3
锛?/p>
*
锛?/p>
5/4
锛?/p>
*
鈥?/p>
*(100/99)*(1/2)*(2/3)*(3/4)*
鈥?/p>
*(98/99)
=50*(1/99)=50/99
8.