如题所述
1.判断题
(1)3-4×(-3.5)=0
(2)如果a与-2互为倒数,那么a2-2a=1.
(3)-(
)2=-
(4)-(-1)3×(-0.2)3=0.008.
(5)0.25×1
+0.75÷
=
.
(6)(-4)+(-7)-(-21)=-4-7+21.
(7)|-1.3|+0÷(5.7×|-
|+
)=1.3.
(8)(a-2)2+|b-4|=0,则a=2,b=4.
2.填空题
(1)-32×5-(-4)2×2=_________.
(2)(-1)4-5×(-
)3=________.
(3)-(-3)2-33=_________.
(4)-32÷(-3)2+(-2)4÷(-24)=_________.
(5)|(-1)7-(-2)3|=__________.
(6)若|a-3|+|b+
|=0,则ba=__________.
(7)用“>”或“<”号连接下列各组数.
①-32____________
(-2)2;
②-
____________-|-
|;
③(-1)53____________(-2)37;
(1)3-4×(-3.5)=0
(2)如果a与-2互为倒数,那么a2-2a=1.
(3)-(
)2=-
(4)-(-1)3×(-0.2)3=0.008.
(5)0.25×1
+0.75÷
=
.
(6)(-4)+(-7)-(-21)=-4-7+21.
(7)|-1.3|+0÷(5.7×|-
|+
)=1.3.
(8)(a-2)2+|b-4|=0,则a=2,b=4.
2.填空题
(1)-32×5-(-4)2×2=_________.
(2)(-1)4-5×(-
)3=________.
(3)-(-3)2-33=_________.
(4)-32÷(-3)2+(-2)4÷(-24)=_________.
(5)|(-1)7-(-2)3|=__________.
(6)若|a-3|+|b+
|=0,则ba=__________.
(7)用“>”或“<”号连接下列各组数.
①-32____________
(-2)2;
②-
____________-|-
|;
③(-1)53____________(-2)37;
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