直接寫出得數(shù).
236+298=
1
5
-
1
6
=
3
8
×12
=
0.15+20.2=
10÷
5
6
=
6.3÷0.07= 0.25÷2.5%= 6-0.75=
51×
2
3
=
3.7×0.001= 6
6
7
÷3
=
2
3
+1
1
4
=
分析:(1)依據(jù)整數(shù)加法性質(zhì)化為236+300-2解答,
(2)(3)(5)(7)(9)(11)(12)依據(jù)分數(shù)四則運算計算方法解答,
(4)(6)(8)(10)依據(jù)小數(shù)四則運算計算方法解答.
解答:
解:236+298=534;
1
5
-
1
6
=
1
30
;
3
8
×12
=4.5;
0.15+20.2=20.35;
10÷
5
6
=12;
6.3÷0.07=90; 0.25÷2.5%=10; 6-0.75=5.25;
51×
2
3
=34;
3.7×0.001=0.0037; 6
6
7
÷3
=2
2
7
;
2
3
+1
1
4
=1
11
12
故答案為:534,
1
30
,4.5,20.35,12,90,10,5.25,34,0.0037,2
2
7
1
11
12
點評:本題主要考查學生運用四則運算方法解決問題的能力.
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