(1)计算:(1)(-2)+(+5)-(+4)-(-3)-3(2)计算:-5×(-6)+3×(-8)-(-4)×(-7)
题型:解答题难度:一般来源:不详
(1)计算:(1)(-2)+(+5)-(+4)-(-3)-3 (2)计算:-5×(-6)+3×(-8)-(-4)×(-7) |
答案
(1)原式=-2+5-4+3-3 =-6+5+0 =-1;
(2)原式=30-24-28 =30-52 =-22. |
举一反三
计算 (1)(+--)×(-36); (2)(-2)2+[18-(-3)×2]÷2. |
-32×(-2)3÷[(-1)6÷×(-3)]+3÷(-2)2. |
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