考點(diǎn):整數(shù)、分?jǐn)?shù)、小數(shù)、百分?jǐn)?shù)四則混合運(yùn)算,運(yùn)算定律與簡(jiǎn)便運(yùn)算
專題:運(yùn)算順序及法則,運(yùn)算定律及簡(jiǎn)算
分析:(1)運(yùn)用加法交換律解答,
(2)(4)(5)(6)(7)(8)(9)(10)運(yùn)用乘法分配律解答,
(3)運(yùn)用減法性質(zhì)解答.
解答:
解:(1)
+
+
÷
=
++=1
+=1
;
(2)
×11+
÷
=(
+
)×11
=1×11
=11;
(3)
-
-
=
-(
+
)
=
-1
=
;
(4)3
×
-
÷3
=(3
-
)×
=3×
=2;
(5)
×77+
=
×(77+1)
=
×78
=11;
(6)
×106-
=
×(106-1)
=
×105
=34;
(7)53×
=54×
-1×
=7-
=6
;
(8)2
×3+2
×6+2
=2
×(3+6)+2
=2
×9+2
=22+2
=24
;
(9)
×25-
+8×0.375
=
×(25-1+8)
=
×32
=12;
(10)46×
=44×
+2×
=21+
=21
.
點(diǎn)評(píng):正確選擇并運(yùn)用簡(jiǎn)便方法解決問(wèn)題,是本題考查知識(shí)點(diǎn).