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初一数学试题___2012新版有理数的乘除法一百道题含答案

发布时间:2013-11-08 10:02:58  

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七年级数学第二次百题竞赛

每小题2分,满分200分 姓名 得分

?3?

1. (1) ????8 (2)

?4?

?1??1???3????2? ?2??3?49

=﹣6 =14 =–3.8 =

6

?1?

0.5 (4) ??2??(?6) (3) (–7.6)×

3??

1?3??7?

(5) ?2?3?(?4) (6) ?3???4??(?6) (7) 8?????(?4) (8) ????12?(?1)

7?4??8?

=24 =–72 =24 =12

?1??1??1??1??111?

(9) ??1????1????1????1? (10) ?????12 (11) (–90.25)÷9.5

?2??3??4??5??346?

=3 =5 =–7

311?2??1?

(12) ??3???5? (13) 4÷(–2) (14) 0÷(–1000) (15) –×(–1)÷(–2)

424?3??2?

2

=– =–2 =0 =–0.5

3

73?3?

(16) ?3.5??(?) (17) ????8×(-9) (18) (–6) ×(–5) ×(–4) ×(–3) (19) (–9.3)×4.4

84?4?

=3 =54 =360 =–40.92

3?1??1??3?

(20) ??3????2?×6÷(–7) (21) 8?????(?4)?2 (22) 8??(?4)?(?2)

4?2??3??4?

=–7 =22 =2

?3??1??1??1??1??1??1?

(23) 8?????(?4)?(?2) (24) ??1????1????1????1????1????1?

?2??3??4??5??6??7??4?

5

=–48 =

3

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

(25) ?1????1????1????1????1????1?? (26) (+48)÷(+6)

223344????????????5

= =8

8

?2??3?

(27) (–1155)÷[(–11)×(+3)×(–5)] (28) 375÷???????

?3??2?

=–7 =375

5927224

(29)(?2)??(?)?(?) (30)(–6)×5×(?)? (31)49?(?5)

4103672534

=– =10 =–249

25

583114

(32)(–4)×7×(–1)×(–0.25) (33)(?)??(?)? (34) (?1)?(?3)

24152445119

=–7 = =

244

533

(35)(?8)?(?7.2)?(?2.5)? (36)?7.8?(?8.1)?0??19.6 (37) –1

7512

6

=-–60 =0 =–

7

11111131

(38)??0.25?(?5)?4?(?) (39)(?8)?(?1?) (40)(????)?(?48)

25248123646

168

=– =5 =–

53

2215117211

(41)?13??0.34???(?13)??0.34 (42)(+3)×(3–7)×

73222273737

=–13.34 =–4

412

(43) 0×(–1)×(–2)×(–3)×(–4) (44) (–+)×(– 63)

7921

=0 =–35

11??(-?35 (-11)(?-25)(45)33? (46)(–72)×(+1) (47)357)5

3

1

=100 =–96 =–

3

111

(48)(+–)×(–48) (49) (-125) ?(-2)?(-8)

4612

=–16 =–2000

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=–1 =1 =25

12711 =– (27)-0.25÷1 (28)(?2)?(?1) (29)×4 (30)-4÷(-9)÷3 23922 134 =– = =184 = 5362272.(1) (–4) × (–7) (2)6 ×(–8) (3)(?)?(?1) (4)(–25)× 16 245

11113111 =28 =–48 = =–400 (31)30÷(?) (32)(?)?(?) (33)13?(?7) (34)(+5)÷(-) 322334128

151?? =36 =–13 =– =–10 (5) 3 ×(–5)×(–7)× 4 (6)15 ×(–17)×(–19) (7) (?8)???(?)? 84?? =420 =4845 =-2 1122311317(-)(?-2)(?-15)(35)(-2)÷(-10)×(-3)÷(-5) (36)??(???) (8) (?)?2.5?(?)?(?8) (9) (10)(+22)?(-33)?(-4)?0 234267314516117 = =– =– =–18 =0 6144

12231871131(37)() (38)(–27)÷9 (39)– (???)??(-100)(?-+-0.01)(11) (12)(?12)?4 (13)(?24)?(?2)?(?1) 1052673144231153135 =–14 =–3 = =–99 =– =–10 6444 (40)3.75–(+4)+( –5.5)+( –6) (41)7×(1–4×3)×(–2) (42)–36÷(–6) –72÷(–8) 59272(14)(?2)??(?)?(?) (15)(-6)×5×(?)? =–11.75 =154 =15 410367 3 =– =10 (43)–32÷(–2)+(–2)×(–8)–2 (44)(–3)–[–5+(–1×0.6)÷3] 2 =30 =2.2 (16) (–5)×(–3)+( –7)×(–3)+12×(–3) (17)[(–2)–(–5)]÷[(–2)–(–5)] 182(45)(–3)×(–7)–(–)÷(–) (46)–8–[–7+(1–×0.6)÷(–3)] =0 =1 773 745151 =20 =– (18)(?0.75)??(?0.3) (19)(?0.33)?(?)?(?11) (20)?2.5??(?) 854384 =2 =–0.09 =1

11?1??81?????? (47)–1–|0.5–1|÷0.25×[–2–(–3) ] (48) 143111133?9?(21)?27?2??(?24) (22)(?)?(?3)?(?1)?3 (23)?4??(?)?2; 4952422 =–3 =–240 214 = =– =8 9252832(49)-÷(-2)-×(-1)-0.75 2411341(24)?5?(?1)??(?2)?7 (25)?1???? (26) -200÷(-8) 554218432754131(-7)(?-)(?-1(50) 9642)

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1 611)÷(-10)×(-3)÷(-5) 23新课标第一网系列资料 www.xkb1.com

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