?????????

admin

??????????????

1.a?2a?????? ? ?

2.???????5?????5??????? ? ?

3.3x?8????? ? ?

4.????????.???.??????????????????? ?

5.104.104????????????? ?

6.0.5?0.50????????????? ? ?

7.??????10??????????10?????????20??? ?

8.???a?????b?????c???????a = bc?? ?

9.??????????????????? ? ?

10.????????????????????

1.????ABCD????60?????E?AB????

??????? ????? ? ?

? 40 ? 30 ? 20 ? 10

2.?????

3.????????????????? ? ?

? 5? 10? 11 ? 12

4.?x?5??20???? ?

? 5x = 20? 5x?20? 5x?20 ? 20?5x

1.??????????25????22???????????40????????????????

21???? ? ? 3

3240�[24�?83?68?]?680?68�45?�55

x�36 = 17 4 x?5�8 = 20

1.24?192????13????11??????

2.????35?4???58????????

2.???60???????4?????152?????155?????145?????148?????????????

7?27?

1.?1????????? ?????????

2.????????????a??????? ??

3.??????????a????h???????????????????

4.????????????????????????????????????????????????? ?

5.?????????????1???????400??? ??

6.??a?b?a = 19?4b =28???a = ?

7.????????8??3?????2?????????????????????????????? ????

8.???????????25??????2????????32???????? ??

9.?????????????????????4300???????3900???????4400??????????

10.7?? = ??? 4000?? =????

??????????2360??????????????7????????????????????80???????????????

6.???????????????????????????60????????????????

7?29?

7.25?3.42?1.58 8.27?3.7?0.73?6.3

25�23�4 28 �38?72�38

3.97+0.7?1.3265+32�475.6?(14.3?8.3)

?47+33?�13 15�27-200�8?324-285?�12 �26

??????????96???????????????????8??????????????????

7?30?

1?179?54?321

?3?15?25?3?1?0?75?4?9

?5?124�5?169�13

?48??60????25??4?????????

??????????32???8????12??????

?72?23?????2400??30??????????

???????3?5????2?8???????

?????????????????????????????????????????????????60?????????????????????????????????????

7?31?

1?2007?????�????�?????????????7?9?????????????????????????????????????7?9?????? ????????? ??

2??????299792?????? ??????????????648500000????�?�?????????

3???????�2�??????

20?04???3?20???6?02??

4?8?25??? ????? ??0?1?? ??0?01????

5??3?25??10??? ????????100??? ??

6??3?8????0?001??????? ????260?0?01???? ?? 7?3?500???? ???2350???? ???

8????????????30�??????90�??????? ??

9??????9?????????30??????????? ?????? ?2?13�14�125�2 ?4?115�23?23�15 ?6?40??15?3?4?8?

??????????????

?????

?????

?????1??

60�9= 50�90=600�30=20�34=

43�2= 11�600= 13�600=75-18=

70-30=8000-3000= 120�3= 3�900=

900�3=320�3=210�4= 70�20=

25�100= 75�3= 125�8= 25�40=

?? ????????4??

805�54 126�37 310�14

34�930 367�50 800�74

?? ?????1??

1?365?14?? ?175?5? ??

2???�??=1600? ??�??=2800?

3?125�16=125��2?250�4�6=250�

4?211�39????? ?498�21????? ?

5????????????????? ?

?? ????????????10?????????????????

3??

?? ???????6??

1? ????????15????????????????????800

????????????

2? ???3????1500???????????8000????15??

??????

3?

4?

5?

6? ?????????48??????????????????12??????????????????????????? ?????????????????5???100????????25??????????????????? ???????????85?????????65?????????20??????????????????????? ?????300??????????20????80???????

???????????????

?? ???

?????????????????????3??35???????????41?????????????????????

????

?? ?????1??

1?156�?84?39?�60??????????????????????

2??671?29�4�2??????????????????????????? ??

3?????????????????

?1?25?15=40?2�40=80?1600�80=20??????????

?2?30?10=20?3�20=60?1200?60=1260???????? ??

4????????????560?????? ??

5??????????8?????????720????? ????????

????????????�?�????�ה????1??

1?320?280???????????????

?320?280?�?320?280?????????????????

2??18�5???36�12??????????????????

3????????????????????????????

4?780?20�5???????780?20?�5?????????????????????????????????????

????????????????????2??

1?32�800?400�25???????

2?32�800?400�25???????

3?32�800?400�25???????

????

1?????????4??

2400�80?14�2108??83?360�60?

?420?48?�?375?345? 420�[?205?198?�4]

460�?29?18�3? 1450�[2�?16?9?]

2?????????????3??

715+265+335+285125�?8�4?�5

7100-137-263+300 75�4�2�5

3????????5??

?1?25?40???163?87???????

?2?????8???54?10????????

?3????????149???????8??5???????

?????????6??

1??????850????????2??????????????30?????????

2????????18???????????20???????????6???????????????

3???????????9?????270???????180??????

???????????

4?3?????480???????????2?????????????

5??????????5??????????75?????40???????25?????????

??????

?? ???????????????????????????????

?2.5??

?85?a?�b=?�???�? ?17+??�?=?�5?5�3

b�a+25�?=?????�b 53�?+?�?=a�?53???

?? ??????�?�????�ה????2??

1?102�98=?100+2?�98???????????????? 2?36�25=?9�4?�25=9+4�25????????????? 3?125�17�8=125�8�17??????????????? ? 4?179+204=179+200+4??????????????????

??????????????????????2??

1?125+67+75=67+?125+75????? ??

????????????????????????

2?56+56�4??????

? 56�?4+1? ? 56�4+1? 4�?56+1?

3?347-98???????????

? 347-100-2? 347-?100+2? ? 347-100+2

4????????????? ??

? ab=ba? (ab)c=a(bc) ? (a+b)c=ac+bc

????

1??????????1??

70�13=22�10=250�4=0�280=

456?199= 100�20= 67?23=31�30=

157?198= 32�30=480�16= 850�90=

2???????????????????4??

165?299 47�9?47630�18�5

36�2563�73?63�63 421?175?25

125�25�64 72�26?36�48

?????????6??

1?????45??????155???????40????????????????????

2????????????????????70???????85??11???????????????????

3??????175???????38???????62????????

4??????????2????????2???????36??????8????????????????

5????????96??????????3??10??????????????

6`??????????????????????68???????41???????????????

???2016???????????????

2016???????????????

?. ??

1??????

40�25= 64�8�5= 28+169+72= 32�3�32�3=

800�40= 125�8= 60+840�70= 3�( 36+54 )=

3000�60-3000�75= 100-48+152=

2???????

5000-666�37�34 29�45-45�17

(73+54)�(72�9) 20�[250+(265-225) ]

928-28�(73-46) 7800�[300+5�( 66+134 )]

????

1???????(??????)????????( )?

2????=( )�( ) ????=( )�( )

3???????20????34???680??

????????( )?20???( )?34???( )?

4?????????????????????????( )?????( )???

5??�45-15=30 30�3=10 6�10=60�????????

6?65�(207-87�29)???????

?.?????????????( )?4%

1.? 36�25????????( )

a?(4�25) �(9�25) b?(9+4)�25

c?(4�25) +(9�25) d?(4�25) �9

2. [1188-5�( 66+134 )] �94??????( )

a???????? b????????

c???????? d????????

?.????????????????5%

?????????????�24�???????????????? 10%4?3?6?8 10?4?2?8

?.????30%

1??????????????????60??4??????3???????????????????

2??????????????????50???12?????????????????????

3?????180?????????10???5?????????????????????

4??????????????????????400???????100??????????????2??????????

5?????600?????????3????????20????????26????????????????

6?????XX??????4????1400??????????????

7????????????60?????20????????????????????????

8????????4???2????????2????????????????

???

????

1??????

40�25=100 64�8�5=40 28+169+72=269 32�3�32�3=9800�40=20 125�8=100 60+840�70=72 3�( 36+54 )=2703000�60-3000�75=10 100-48+152=204

2???????

5000-666�37�34

=5000-18�34

=5000-612

=4388

29�45-45�17

=45�(29-17)

=45�12

=540

(73+54)�(72�9)

=127�8

=1016

20�[250+(265-225) ]=20�[250+40]

=20�290

=5800

928-28�(73-46)=928-28�27

=928-756

=172

7800�[300+5�( 66+134 )]=7800�[300+5�200]=7800�[300+1000]=7800�1300

=6

????


??????????????????
?????http://www.850500.com/news/61486.html
?????,??!