题目内容
计算:
(1)﹣3﹣6+9﹣11+2
(2)(
×(﹣24)
(3)(﹣10)﹣(﹣10)×
÷2×(﹣20)
(4)
(5)(﹣12)÷(﹣
)÷(﹣100)
(6)8+(4﹣5)÷0.1
(7)﹣14﹣(1﹣0.5)×[2﹣(﹣3)2]
(8)36×
(9)3.14×(﹣5)+3.14×(﹣12)+3.14×8
(1)﹣3﹣6+9﹣11+2
(2)(
(3)(﹣10)﹣(﹣10)×
(4)
(5)(﹣12)÷(﹣
(6)8+(4﹣5)÷0.1
(7)﹣14﹣(1﹣0.5)×[2﹣(﹣3)2]
(8)36×
(9)3.14×(﹣5)+3.14×(﹣12)+3.14×8
解:
(1)原式=(﹣3﹣6﹣11)+(2+9)
=﹣20+11
=﹣9;
(2)原式=
×(﹣24)
×(﹣24)
×(﹣24)
=﹣4+18﹣2
=14﹣2
=12;
(3)原式=﹣10﹣(﹣5)×
×(﹣20)
=﹣10﹣50
=﹣60;
(4)原式=
×
(2﹣9)
=﹣1+
=
;
(5)原式=
=144×
=﹣1.44;
(6)原式=8+(﹣1)×10
=8﹣10
=﹣2;
(7)原式=
=
=
;
(8)原式=
=36×
=1;
(9)原式=3.14×(﹣5﹣12+8)
=3.14×(﹣9)
=﹣28.26.
(1)原式=(﹣3﹣6﹣11)+(2+9)
=﹣20+11
=﹣9;
(2)原式=
=﹣4+18﹣2
=14﹣2
=12;
(3)原式=﹣10﹣(﹣5)×
=﹣10﹣50
=﹣60;
(4)原式=
=﹣1+
=
(5)原式=
=144×
=﹣1.44;
(6)原式=8+(﹣1)×10
=8﹣10
=﹣2;
(7)原式=
=
=
(8)原式=
=36×
=1;
(9)原式=3.14×(﹣5﹣12+8)
=3.14×(﹣9)
=﹣28.26.
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