
计算(1).(-3)+(-4)-(+11)-(-19) (2)-2³-(1-0.5)*1/3*【2-(-3)²】
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(1)
(-3)+(-4)-(+11)-(-19)
= -3 - 4 - 11 + 19
= 1
(2)
-2³-(1-0.5)*1/3*【2-(-3)²】
= -8 + 0.5×1/3×7
= -8 + 7/6
= -41/6
(3)
-3.5除8/7*(-8/7)*|-3/64|
= 7/2÷ 8/7×8/7×3/64
= 7/2×3/64
= 21/128
(-3)+(-4)-(+11)-(-19)
= -3 - 4 - 11 + 19
= 1
(2)
-2³-(1-0.5)*1/3*【2-(-3)²】
= -8 + 0.5×1/3×7
= -8 + 7/6
= -41/6
(3)
-3.5除8/7*(-8/7)*|-3/64|
= 7/2÷ 8/7×8/7×3/64
= 7/2×3/64
= 21/128
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