问题
解答题
简便运算
|
答案
(1)
÷4 7
+11 5
×3 7
,5 11
=
×4 7
+5 11
×3 7
,5 11
=(
+4 7
)×3 7
,5 11
=1×
,5 11
=
;5 11
(2)16×2.28×125,
=2×8×2.28×125,
=(2×2.28)×(125×8),
=4.56×1000,
=4560;
(3)247.6-(147.6+67.89),
=247.6-147.6-67.89,
=100-67.89,
=32.11;
(4)(
+5 8
)×8+1 17
,9 17
=
×8+5 8
×8+1 17
,9 17
=5+
+8 17
,9 17
=5+(
+8 17
),9 17
=5+1,
=6.