计算:①8+(-10)+(-2)-(-5)②(-5)÷(-54)③-36÷(-6)-72÷(-8)④8×(-45)÷|-16|⑤(-24)×(-12+34-13)⑥(-12)+(-34)-(-134)+(+1.5)⑦18×(-23)+13×23-4×23⑧-32-[1-(-2)3]÷(-3)-数学
题文
计算: ①8+(-10)+(-2)-(-5) ②(-5)÷(-
③-36÷(-6)-72÷(-8) ④8×(-
⑤(-24)×(-
⑥(-
⑦18×(-
⑧-32-[1-(-2)3]÷(-3) |
答案
①8+(-10)+(-2)-(-5) =8-10-2+5 =1; ②(-5)÷(-
③-36÷(-6)-72÷(-8) =6+9 =15; ④8×(-
=8×(-
=-10÷16 =-
⑤(-24)×(-
=12-18+8 =2; ⑥(-
=(-
=1+1 =2; ⑦18×(-
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