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1?5.2819???????( )????????( )?
2????4??????5???????0.8????( )? 3?3.61.9+0.3681=3.6(1.9+ )
4????????( )????????( )??????0.01??( )?
5??????????1000???( )????0.01?????0.5???( )?
6???????????????????8.5??????????( )????( )?
7?0.98.46???( )???0.365?100??( )?
8?3.75?2.5?( )??
9???0.2?????0.6????( )?
10??( )???>?<?=
3.90.96( )3.9 0.630.63( )0.63
????(???? ???? )
1?????????????????? ( )
2?????????0.9???????????9????0.1?
( )
3????????????????????????????
( )
4????????????????????????( )
5???5.5x<5.5???x< 1? ( )
????(?????????????)
1?8?1.25????????( )
?81.25=100 ?1.258=10 ?1.258=1
2?????????????????0.1?????( ) ???? ? ??? ????
3????(0??)???1????????( )???? ??? ??? ???
4?3.12??4.4???2.5???????????( ) ?3.12+4.42.5 ?2.53.12+4.4
?(3.12+4.4)2.5 ?3.12+2.54.4
5?1.85-1.851.85????( )
?0 ?0.85 ?1.85 ?185
6??????????1????( )
?0.831 ?0.831 ?10.83
7?5.66+5.63+5.6??????( )
?5.6(6+3) ?5.6(6+3+1)
? 5.66+3+1 ?5.6(6+3+1)
8?0.98??100??( )
?0.098 ?9.8 ?0.0098 ? 98
????
1???????
0.345=160.01= 1.780.3=
0.270.003= 0.010.1= 1.820=
(1-0.01)100=0.99+0.0110=
3.20.10.01=2.5-2.55=
2??????
1.68832 (????????) 29.90.46
2.60.25 0.770.35 (????????)
3?????(???????)
0.7540.2549.6+9.999
15.588.2-0.72 4.5360.814
2.83.6+1.42.8 6.310.1
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1?????4????0.1?1.7??????
2?25.7??1.76??0.8????????
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1?????????7.5??????????4?????0.65???????7??????????????
2????????????83??????74??????71??????64??????????????????????3.5?????????????
??????????????????10.1,????????23.23;??????7.2?????????33.12????????????
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20132014??????????????
???90?????100??
?????????1???23??
1???2.955???????????????????? ?
2??????0.1230.15???151925???100
3????21.3?? ??3??? ??1.7??13.6?
4??????50???????C????????????
5?????a???????10????b?????? ????????????a=94?b=7??????????
6????2.984.6?????????2.984.6???1??
7??5.030.4???12.5?,?????( )
8?????????????6.3??????????????????????
9.?7.6262?7.6?7.62121?7.16243???????????????????????????? ???????? ?
10.
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7.27.2 1.043.57 3.57
5.240.7 3.20.01 3.20.01
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2?????????????? ?
3?3x?8???? ?
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5???5x?0.6=2.6???0.4 ? ?
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.
1??5.4?5.6??????? ??
A. ? B. ? C. ? D.??
2????????a?????2?????b???????? ???
A. a?2?b B. 2 a?b C. 2 a?b D. 2?a?b?
3? x=5???? ????
A. 40 x =8B. 40?x =8 C. 40x =8 D. 40?x =8
4??????????????? ??
A. 3.5 B. 3.53 C. 3.53 D. 3.535
5????????2.4??30???????? ???
A. 12.5 B. 12C. 13D. 14
6?????????0.7,??????????10?,?????,??
()?
A.??B.??????10?C.??????10? D.????
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1??????????0.5???5??
0.30.2? 2.410?4.20.7? 3.612? 7.5?0.15?
1.25?9.1?0.7?150.6? 0.8?0.35? 0.780.3?
2??????????2????2???10??
0.580.25?????????? 212.4
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1.573.9 ?????????? 4733
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......
3???????????????????2???12??
130.42.5 644.5?364.51.252.50.8
1.5101?1.5 14.64?3.72.8 2.87.3?0.2728
4????????2???8??
x?1.7?9.2 0.36?x?0.12
x0.25=4 8 x?6.4
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1???3????37??????????1.5?????1????????0.8??????????????????????
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2?????????????3????2.5?????1.65?????1????????????????
3.??????????680?????????????????????????15????????????????????????
4. ?????????????52.5????????2.5???????????????????
5. ?10?????????8.5???300??????????????
6. ????????????????1.2??????252????????????????
???2014????????????????
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1???2.955?????????? ?????????? ?
2??????0.1230.15?? ?151925?? ?100
3????21.3?? ??3??? ??1.7??13.6?
4??????50???????C????????? ???
5?????100???????10????7?????? ?????? ?????
6????2.984.6???? ?????2.984.6???1? ?
7??5.030.4???12.5?,?????( )
8?????????????6.3????????????? ???????? ?
9.?7.6262?7.6?7.62121?7.16243???????????? ???????? ????
???? ???????? ?
10.???????
1.043.57 ? ?3.57
3.20.01? ? 3.20.01
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1????????????????? ?
2?????????????? ?
3?3x?8???? ?
4???374??????? ? ?
5???5x?0.6=2.6???0.4 ? ?
6??????????????????1??? ?
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1??5.4?5.6??????? ??
A. ? B. ? C. ? D.??
2????????a?????2?????b???????? ???
A. a?2?b B. 2 a?b C. 2 a?b D. 2?a?b?
3? x=5???? ????
A. 40 x =8 B. 40?x =8 C. 40x =8 D. 40?x =8
4??????????????? ??
A. 3.5 B. 3.53 C. 3.53 D. 3.535
5????????2.4??30???????? ???
A. 12.5 B. 12 C. 13 D. 14
6?????????0.7,??????????10?,?????,??( )?
A.?? B.??????10? C.??????10? D.????
??????
1???????
0.30.2? 2.410? 4.20.7? 3.612? 7.5?0.15?
1.25? 9.1?0.7? 150.6? 0.8?0.35? 0.780.3?
2???????
0.580.25?????????? 1.573.9?????????? 4733??????????
3????????????????
130.42.5 644.5?364.5 1.252.50.8
1.5101?1.5 14.64?3.72.8 2.87.3?0.2728
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1???3????37??????????1.5?????1????????0.8??????
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2?????????????3????2.5?????1.65?????1?????????
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3.??????????680?????????????????????????15???
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4. ?????????????52.5????????2.5????????????????
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5. ?10?????????8.5???300??????????????
6. ????????????????1.2??????252????????????????
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1?2.955?????????? ????????????
2?0.120.15?????????0.1230.15?? ?15
3?3.6+3.6+3.6+3.6+3.6=( )( )=? ????????????
4? ??2.4?7??6.8??????? ??
6?359?????? ?????????? ?????????? ?????????? ??
7?????????????6.0????????????? ???????? ??
8???????????
7.20.9?7.2 1.043.57?3.570.14
5.24?5.240.73.20.01?3.20.01
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1????????????????? ? ?
2?3.5?3.50?????? ? ?
3???????????????????????????? ? ?
4?374???????? ? ?
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6?43????????????8????5??? ? ?
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1?5.4?5.6??????? ???
A. ? B. ? C. ? D.??
2??3061.7????????? ??
A. 30.617 B. 3.0617 C. 306017 D. 30617
3??0.4562.1????????? ??
A. 4.5621 B. 210.0456 C. 45.60.21 D. 4560.021
4?????????????????2?3???????????????? ??
A. ?5, 3? B.?2, 6? C. ?5, 6? D. ?4?3?
5????????2.4??30???????? ???
A. 12.5 B. 12 C. 13 D. 14
?????????39??
1???????6??
0.30.2? 2.410? 4.20.7? 3.612?
1.25? 9.10.7? 150.6? 0.8?0.35?
0.780.3? 0.254? 7.50.15? 1000.74?
2???????15??
0.580.24 2124
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1.573.9 3.420.25 70.733
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3????????????18??
100.22.5 644.5?364.51.253.20.8
14.5102 14.64?3.72.88.40.210.5
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1????13.5??????11.3????????????????4.2????????????
2????6????10?????????19.8??????????1.5??????????
3?????????1.6m,????2??????????????
4???????4??????3.8??????185.44??????????????????
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1?0.374.9???? ???????????? ??
2?1???? ???????2.7???? ???????
3?6.643.3???? ??????????? ??
4??34.650.25??????????????? ?????? ?? 6?9a+6a=? + ??
7?????x??????5????a???????? ??????? ????????????????
8?????2????400????????? ????1???? ????
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1???????????????????????????? ? ?
2?????2.5??????? ? ?
3????5?5.0???5.0?5??? ? ?
4?a+a=a2 ? ? ?
5?X=3???? ? ?
6?36.90.254=36.9?0.254?? ? ?
7?????????????????? ? ?
8?0.244444????0.24(?)? ? ?
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1????0.80.24????????????? ??
A???? B???10? C???100?
2??????????1????? ??
A?10.44 B?0.441 C?0.441
3???2.53.7+2.50.3???????? ???????
A?????? B?????? C??????
4???????5?????????????????????0.8?????????? ????
A?6 B?6.25 C?7
5?????????? ??
A?2.07 B?2.07(?) C?2.0(?)7(?) D?2.077
??????38??
1????????????????1???10???
5.40.01= 0.1250.8= 0.270.03= 1.80.3= 5000.2=0.560.4= 1.25170.8= 0.010.1= 0.3709.54=0.550.11=
2??????????2???12???
1.621.5=23.94252=
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