问题
解答题
计算: (1)-3+10-7-10 (2)-1÷(-
(3)
(4)360÷4-(-2)2×[2-(-3)]. |
答案
(1)原式=-20+10=-10;
(2)原式=-1×(-
)×4 3
=1 4
;1 3
(3)原式=0.7+3×(-4)=0.7-12=-11.3;
(4)原式=90-4×5=90-20=70.
计算: (1)-3+10-7-10 (2)-1÷(-
(3)
(4)360÷4-(-2)2×[2-(-3)]. |
(1)原式=-20+10=-10;
(2)原式=-1×(-
)×4 3
=1 4
;1 3
(3)原式=0.7+3×(-4)=0.7-12=-11.3;
(4)原式=90-4×5=90-20=70.