计算:(1)1.78+3.64﹣5.25﹣0.2+0.3﹣0.33(2)1﹣++﹣﹣3(3)(﹣+)÷(﹣)×+(﹣1)100(4)﹣102﹣[(1﹣)×][2﹣(﹣3)2](5)﹣2﹣{8+(﹣1)2﹣[(﹣4)×2÷(﹣2)+×(﹣6)]}(6)+|﹣(﹣)2﹣|÷﹣|﹣2﹣3|﹣-七年级数学

题文

计算:(1)1.78+3.64﹣5.25﹣0.2+0.3﹣0.33
(2)1﹣++﹣3
(3)(﹣+)÷(﹣)×+(﹣1)100
(4)﹣102﹣[(1﹣)×][2﹣(﹣3)2]
(5)﹣2﹣{8+(﹣1)2﹣[(﹣4)×2÷(﹣2)+×(﹣6)]}
(6)+|﹣(﹣2﹣|﹣2﹣3|﹣
题型:计算题  难度:中档

答案

解:(1)原式=5.42﹣5.25﹣0.2+0.3﹣0.33,
=0.17﹣0.2+0.3﹣0.33,
=﹣0.03+0.3﹣0.33,
=0.27﹣0.33,
=﹣0.06
(2)原式=﹣++1﹣3+
=﹣+
=+
=
=﹣
=
=﹣
(3)原式=(﹣)÷(﹣)×+(﹣1)100
=××+1,
=1+1,
=2
(4)原式=﹣102﹣[][2﹣32],
=﹣100﹣×(2﹣9),
=﹣100﹣×(﹣7),
=﹣100+
=﹣98
(5)原式=﹣2﹣{8+1﹣[﹣8÷(﹣2)﹣]},
=﹣2﹣{9+1},
=﹣2﹣10,
=﹣12
(6)原式=+|﹣|﹣5|﹣
=﹣+×25﹣5﹣5,
=+﹣10,
=﹣
=﹣