P.6 升F.1 數學題

2007-07-31 10:07 pm

(1).The number of factors of 97 is
A. 2 B. 3 C. 4 D. 5
(2).(+5) + (-7) =
(3). (-7) + ( -9)=
(4). (-7) - (-12)=
(5). (+5) - (-3) =
(6). (-3) * (+9) =
(7). (-7) * (-6) =
(8). (-3) / (+6) =
(9).(-5) / (-15) =

更新1:

(10).(+13) / (-39) = (11).(-5) - (- 2/5) = (12).(-16) * (- 3/4) = (13). (-1/6) * (-3/2) =

回答 (3)

Ivan

2007-07-31 10:15 pm

✔ 最佳答案

(1).The number of factors of 97 is A
A. 2 B. 3 C. 4 D. 5
(2).(+5) + (-7) = -2
(3). (-7) + ( -9)= -16
(4). (-7) - (-12)= +5
(5). (+5) - (-3) = +8
(6). (-3) * (+9) = -27
(7). (-7) * (-6) = +42
(8). (-3) / (+6) = -1/2
(9).(-5) / (-15) = +1/3
(10).(+13) / (-39) = -1/3
(11).(-5) - (- 2/5) = -4 3/5
(12).(-16) * (- 3/4) = +12
(13). (-1/6) * (-3/2) = +1/4

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用戶5463

2007-07-31 10:20 pm

(1) A

(2).(+5) + (-7) = 5-7= (-2)

(3). (-7) + ( -9)= -7-9=(-16)

(4). (-7) - (-12)= -7+12= 5

(5). (+5) - (-3) = 5+3= 8

(6). (-3) * (+9) = (-27)

(7). (-7) * (-6) = 42

(8). (-3) / (+6) =(-1/2)

(9).(-5) / (-15) = 1/3

(10).(+13) / (-39) = (-1/3)

(11).(-5) - (- 2/5) = -5+2/5= (-4.6)

(12).(-16) * (- 3/4) = 16*3/4 = 12

(13). (-1/6) * (-3/2) = 1/6*3/2 = 0.25

參考: me

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[匿名]

2007-07-31 10:14 pm

(1) A
(2).(+5) + (-7) =5-7= (-2)
(3). (-7) + ( -9)= (-7)-9=(-16)
(4). (-7) - (-12)=(-7)+12=(+5)
(5). (+5) - (-3) =5+3=(+8)
(6). (-3) * (+9) =(-27)
(7). (-7) * (-6) =(+42)
(8). (-3) / (+6) =(-1/2)
(9).(-5) / (-15) = (+1/3)

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