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
1. (1) (2) (3) (–7.6)×0.5 (4)
=﹣6 =14 =–3.8 =
(5) (6) (7) (8)
=24 =–72 =24 =12
(9) (10) (11) (–90.25)÷9.5
=3 =5 =–7
(12) (13) 4÷(–2) (14) 0÷(–1000) (15) – ×(–1 )÷(–2 )
=– =–2 =0 =–0.5
(16) (17) ×(-9) (18) (–6) ×(–5) ×(–4) ×(–3) (19) (–9.3)×4.4
=3 =54 =360 =–40.92
(20) ×6÷(–7) (21) (22)
=–7 =22 =2
(23) (24)
=–48 =
(25) (26) (+48)÷(+6)
= =8
(27) (–1155)÷[(–11)×(+3)×(–5)] (28) 375÷
=–7 =375
(29) (30)(–6)×5× (31)
=– =10 =–249
(32)(–4)×7×(–1)×(–0.25) (33) (34)
=–7 = =
(35) (36) (37) –1 × 学
=-–60 =0 =–
(38) (39) (40)
=– =5 =–
(41) [ # (42)(+3 )×(3 –7 )× ×
=–13.34 =–4
(43) 0×(–1)×(–2)×(–3)×(–4) (44) ( – + )×(– 63)
=0 =–35
(45) (46)(–72)×(+1 ) (47)
=100 =–96 =–
(48)( + – )×(–48) (49)
=–16 =–2000
(50)
=–
2.(1) (–4) × (–7) (2)6 ×(–8) (3) (4)(–25)× 16
=28 =–48 = =–400
(5) 3 ×(–5)×(–7)× 4 (6)15 ×(–17)×(–19) (7)
=420 =4845 =-2
(8) (9) (10)
=– =–18 =0
(11) (12) (13)
=–99 =– =–10
(14) (15)(-6)×5×
=– =10
(16) (–5)×(–3)+( –7)×(–3)+12×(–3) (17)[(–2)–(–5)]÷[(–2)–(–5)]
=0 =1
(18) (19) (20)
=2 =–0.09 =1
(21) (22) (23) ;
= =– =8
(24) (25) (26) -200÷(-8)
=–1 =1 =25
(27)-0.25÷ (28) (29)23÷ ×4 (30)-4÷(-9)÷3
=– = =184 =
(31)30÷( ) (32) (33) (34)(+5)÷(- )
=36 =–13 =– =–10
(35)(-2 )÷(-10)×(-3 )÷(-5) (36)
= =–
(37) ( ) (38)(–27)÷9 (39)–0.125÷
=–14 =–3 =
(40)3.75–(+4)+( –5.5)+( –6) (41)7×(1–4×3)×(–2) (42)–36÷(–6) –72÷(–8)
=–11.75 =154 =15
(43)–32÷(–2)+(–2)×(–8)–2 (44)(–3)–[–5+(–1×0.6)÷3]
=30 =2.2
(45)(–3)×(–7)–(– )÷(– ) (46)–8–[–7+(1– ×0.6)÷(–3)]
=20 =–
(47)–1–|0.5–1|÷0.25×[–2–(–3) ] (48)
=–3 =–240
(49)- ÷(-2 )- ×(-1 )-0.75
=
(50)(-2 )÷(-10)×(-3 )÷(-5)
=