计算:①8×(-1)2-(-4)+(-3);②-413-512+713;③-14×(-216)+(-5)×216+4×136;④(-2)3÷|-32+1|-(-512)×411.-数学
题文
计算: ①8×(-1)2-(-4)+(-3); ②-4
③-14×(-2
④(-2)3÷|-32+1|-(-5
|
答案
①8×(-1)2-(-4)+(-3) =8×1+4-3 =8+4-3 =12-3 =9; ②-4
=-4
=3-5
=-2
③-14×(-2
=-1×(-2
=1×2
=2
=0; ④(-2)3÷|-32+1|-(-5
|