计算:①3+(-2)=______;②1-(-1)2=______;③(-9)+______=9;④-33×29=______;⑤-8比-2小______;⑥-4-(______)=4.-数学

题目简介

计算:①3+(-2)=______;②1-(-1)2=______;③(-9)+______=9;④-33×29=______;⑤-8比-2小______;⑥-4-(______)=4.-数学

题目详情

计算:
①3+(-2)=______;
②1-(-1)2=______;
③(-9)+______=9;
④-33×
2
9
=______;
⑤-8比-2小______;
⑥-4-(______)=4.
题型:填空题难度:中档来源:不详

答案

①3+(-2)=3-2=1;
②1-(-1)2=1-1=0;
③∵9-(-9)=18,
∴(-9)+18=9;
④-33×class="stub"2
9
=-9×class="stub"2
9
=-2;
⑤∵-2-(-8)=-2+8=6,
∴-8比-2小6;
⑥∵-4-4=-8,
∴-4-(-8)=4.
故答案为1;0;18;-2;6;-8;4.

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