问题
解答题
计算: (1)(-81)÷
(2)-1.5+1.4-(-3.6)-4.3+(-5.2); (3)(-
(4)-22×7×(-1)9. |
答案
(1)原式=-81×
×4 9
×(-4 9
)1 16
=1;
(2)原式=-1.5+1.4+3.6-4.3-5.2
=-11+5
=-6;
(3)原式=-
×3 7
×1 8
×87 3
=-1;
(4)原式=-4×7×(-1)
=28.
计算: (1)(-81)÷
(2)-1.5+1.4-(-3.6)-4.3+(-5.2); (3)(-
(4)-22×7×(-1)9. |
(1)原式=-81×
×4 9
×(-4 9
)1 16
=1;
(2)原式=-1.5+1.4+3.6-4.3-5.2
=-11+5
=-6;
(3)原式=-
×3 7
×1 8
×87 3
=-1;
(4)原式=-4×7×(-1)
=28.