问题
解答题
|
答案
(1)0.25×0.07×8
=0.25×8×0.07
=2×0.07
=0.14;
(2)
×(3 4
-4 3
)8 9
=
×3 4
-4 3
×3 4 8 9
=1-2 3
=
;1 3
(3)1÷[(
+1 6
)÷4]1 3
=1÷[
÷4]1 2
=1÷1 8
=8;
(4)6.8×10.7-0.7×6.8
=6.8×(10.7-0.7)
=6.8×10
=68.