A = 20
( B (-1)= -1
( C 099 - 0
D -18=1
(
12. 下列敘述何者正確?
(A)2-(-2)=0 (B) 24 - (24)=0
(C)(-2)-(-2)=0 (D(-2)-(-2)=0
13. 下列四數中,哪個數的值與其他三個數不相等?
(A)(-3) B-|3|| C|-3|- (D|-3|
4. 以指數記法簡記下列各式:
(1) 3 X 3 X3 X3=
(3)-4的平方=
(2) 19個-2相乘一
()
(4) -6X 6 X 6 X 6=
¥ 5. 計算下列各式的值:
(1) (-4)-(-5)-(-7) =
(2) 32 X 5-05- (6-52)) =