计算:①8+(-10)+(-2)-(-5)②(-5)÷( - 5 4 )③-36÷(-6)-72÷(-8)④8×( -
计算:①8+(-10)+(-2)-(-5)②(-5)÷(-54)③-36÷(-6)-72÷(-8)④8×(-45)÷|-16|⑤(-24)×(-12+34-13)⑥(-1...
计算:①8+(-10)+(-2)-(-5)②(-5)÷( - 5 4 )③-36÷(-6)-72÷(-8)④8×( - 4 5 )÷|-16|⑤(-24)×(- 1 2 + 3 4 - 1 3 ) ⑥(- 1 2 )+( - 3 4 )-(-1 3 4 )+(+1.5)⑦18×( - 2 3 )+13× 2 3 -4× 2 3 ⑧-3 2 -[1-(-2) 3 ]÷(-3)
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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×( -
=(-18+13-4)×
=-9×
=-6; ⑧-3 2 -[1-(-2) 3 ]÷(-3) =-9-[1+8]÷(-3) =-9-9÷(-3) =-9+3 =-6. |
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