Question

附加题：直接写出结果．①-5+6=______②．-7×（-5）=______③．-8-8=______④．2÷(?12)=______．⑤-3.4

附加题：直接写出结果．①-5+6=______②．-7×（-5）=______③．-8-8=______④．2÷(?12)=______．⑤-3.45×9.98×0=______⑥-3+（+2）=______⑦．-13×3=______．⑧?3÷3×13=-13-13⑨．5+5÷（-5）=______⑩．3-（-1）2=______．

Answer 1

①-5+6=1．
②-7×（-5）=35．
③-8-8=-16．
④2÷（-

1

2

）=2×（-2）=-4．
⑤-3.45×9.98×0=0．
⑥-3+（+2）=-3+2=-1．
⑦-1³×3=-3．
⑧-3÷3×

1

3

=-3×

1

3

×

1

3

=-

1

3

．
⑨5+5÷（-5）=5-1=4．
⑩3-（-1）²=3-1=2．