直接寫(xiě)出得數(shù)
5
12
×4=
6-
7
10
=
2
5
÷
1
5
=
6÷1%=
2
11
=
1
4
×
3
8
=
5
6
×0÷
5
6
=
10+
3
4
×
8
9
=
3
7
×
2
5
×5×7=
0.99×9+0.99=
分析:根據(jù)分?jǐn)?shù)、百分?jǐn)?shù)加、減、乘、除法的計(jì)算方法進(jìn)行計(jì)算即可.
解答:解:
5
12
×4=
5
3
6-
7
10
=5
3
10
2
5
÷
1
5
=2
6÷1%=600
2
11
=
11
2
1
4
×
3
8
=
3
32
5
6
×0÷
5
6
=0
10+
3
4
×
8
9
=10
2
3
3
7
×
2
5
×5×7=6
0.99×9+0.99=9.9
故答案為:
5
3
,5
3
10
,2,600,
11
2
3
32
,0,10
2
3
,6,9.9.
點(diǎn)評(píng):口算時(shí),根據(jù)所學(xué)知識(shí)快速準(zhǔn)確的進(jìn)行計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算.
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