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计算(1)22+(-4)-(-2)+4(2)(-26.54)+(-6.4)-18.54+6.4(3)(-112)×(-34)÷(-214)(4)(12-15+710−0.01)×(-100)(5)997172×(−36)(6)−24÷(−12+34−13).

题目详情
计算
(1)22+(-4)-(-2)+4
(2)(-26.54)+(-6.4)-18.54+6.4              
(3)(-1
1
2
)×(-
3
4
)÷(-2
1
4
)      
(4)(
1
2
-
1
5
+
7
10
−0.01)×(-100)
(5)99
71
72
×(−36)               
(6)−24÷(−
1
2
+
3
4
1
3
).
▼优质解答
答案和解析
(1)原式=22-4+2+4
=22+2-4+4
=24;

(2)原式=-26.54-6.4-18.54+6.4
=-26.54-18.54+6.4-6.4
=45.08;
             
(3)(-1
1
2
)×(-
3
4
)÷(-2
1
4
) 
=-
3
2
×
3
4
×
4
9

=-
1
2

     
(4)原式=
1
2
×(-100)-
1
5
×(-100)+
7
10
×(-100)-0.01×(-100)
=-50+20-70+1
=-99;

(5)原式=(100-
1
72
)×(-36)
=100×(-36)-
1
72
×(-36)
=-3600+
1
2

=-3599
1
2

        
(6)原式=-24÷(-
1
12

=24×12
=288.