初一数学题 需要 过程 谢谢大家 10
1.-3-[-5+(1-0.2×3/5)÷(-2)]2.-9²+2×(-3)²+(-6)÷(-2/3)3.-1四次方-(1-0.5)×1/3×[2-(...
1. -3-[-5+(1-0.2×3/5)÷(-2)]
2. -9²+2×(-3)²+(-6)÷(-2/3)
3. -1四次方-(1-0.5)×1/3×[2-(-3)²]
4. (-3)²-(1又1/2)×2/9-6÷|-2/3|
5. 32×(-2/3)+(-11)×(-2/3)-21×(-2/3)
6. -3/4×[-3²×(-2/3)²-2]
7. -2²+(-2)³×5-(-0.28)÷(-2)²
8. -(-1)四次方-(1-1/2)÷(+3)×[2-(-3)²] 展开
2. -9²+2×(-3)²+(-6)÷(-2/3)
3. -1四次方-(1-0.5)×1/3×[2-(-3)²]
4. (-3)²-(1又1/2)×2/9-6÷|-2/3|
5. 32×(-2/3)+(-11)×(-2/3)-21×(-2/3)
6. -3/4×[-3²×(-2/3)²-2]
7. -2²+(-2)³×5-(-0.28)÷(-2)²
8. -(-1)四次方-(1-1/2)÷(+3)×[2-(-3)²] 展开
3个回答
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1.
=-3-[-5+(1-0.12)÷(-2)]
=-3-[-5+0.88÷(-2)]
=-3-(-5-0.44)
=-3-(-5.44)
=-3+5.44
=2.44
2.
=-81+2×9+6×3/2
=-81+18+9
=-54
3.
=-1-0.5×1/3×[2-9]
=-1-1/2×1/3×(-7)
=-1+7/6
=1/6
4.
=9-(3/2)×2/9+6×3/2
=9-1/3+9
=17又2/3
5.
=-64/3+22/3+42/3)
=0
6.
=-3/4×(-9×4/9-2)
=-3/4×(-4-2)
=-3/4×(-6)
=9/2
7.
=-4-8×5+0.28÷4
=-4-40+0.07
=-43.93
8.
=-1-1/2÷3×[2-9]
=-1-1/2÷3×(-7)
=-1+7/6
=1/6
=-3-[-5+(1-0.12)÷(-2)]
=-3-[-5+0.88÷(-2)]
=-3-(-5-0.44)
=-3-(-5.44)
=-3+5.44
=2.44
2.
=-81+2×9+6×3/2
=-81+18+9
=-54
3.
=-1-0.5×1/3×[2-9]
=-1-1/2×1/3×(-7)
=-1+7/6
=1/6
4.
=9-(3/2)×2/9+6×3/2
=9-1/3+9
=17又2/3
5.
=-64/3+22/3+42/3)
=0
6.
=-3/4×(-9×4/9-2)
=-3/4×(-4-2)
=-3/4×(-6)
=9/2
7.
=-4-8×5+0.28÷4
=-4-40+0.07
=-43.93
8.
=-1-1/2÷3×[2-9]
=-1-1/2÷3×(-7)
=-1+7/6
=1/6
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题目不吵了哈!
1.=-3-[-5+(1-0.12)÷(-2)]=-3-[-5+0.78÷(-2)]=-3-[-5-0.39]=2+0.39=2.39;
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
1.=-3-[-5+(1-0.12)÷(-2)]=-3-[-5+0.78÷(-2)]=-3-[-5-0.39]=2+0.39=2.39;
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
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1.=-3-[-5+(1-0.12)÷(-2)]=-3-[-5+0.78÷(-2)]=-3-[-5-0.39]=2+0.39=2.39;
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
2.=-81+2×9+6÷2/3=-81+18+9=-54;
3.=1-1/2×1/3×(-7)=1+7/6=13/6;
4.=9-3/2×2/9+6×3/2=9-1/3+9=17又2/3;
5.=-64/3+22/3+42/3=0/3=0;
6.=-3/4×[-9×4/9-2]=-3/4×(-6)=9/2;
7.=-4+(-40)+0.28÷4=-44+0.07=-43.93;
8.=-1-1/2÷3×[2-9]=-1-1/6×(-7)=-1+7/6=1/6.
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