计算:(1)-2-3-5(2) (-2)÷ 1 3 ×(-3) (3) ( 2 3 - 1 12 - 4 1
计算:(1)-2-3-5(2)(-2)÷13×(-3)(3)(23-112-415)×(-60)(4)-14+8-23÷(-4)×(-7+5)(5)100-(-3)÷(3...
计算:(1)-2-3-5(2) (-2)÷ 1 3 ×(-3) (3) ( 2 3 - 1 12 - 4 15 )×(-60) (4)-1 4 +8-2 3 ÷(-4)×(-7+5)(5)100-(-3)÷( 3 4 )(6)-11-2×(-33)+(-22)(7)-32÷[-3 2 -(-2) 3 ].
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(1)-2-3-5 =-(2+3+5) =-10; (2) (-2)÷
=-6×(-3) =18; (3) (
=-
=-40+5+16 =-19; (4)-1 4 +8-2 3 ÷(-4)×(-7+5) =-1+8-8÷(-4)×(-2) =-1+8-4 =3; (5)100-(-3)÷(
=100+4 =104; (6)-11-2×(-33)+(-22) =-11-66-22 =-99; (7)-32÷[-3 2 -(-2) 3 ] =-32÷[-9+8] =-32÷[-1] =32. |
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