小学数学六年级下册口算训?/p>
一、口算?/p>
3.14
×
2= 3.14
×
3= 3.14
×
4=
3.14
×
5=
3.14
×
6= 3.14
×
7= 3.14
×
8=
3.14
×
9=
3.14
×
10= 3.14
×
20 = 3.14
×
1.5 =
3.14
×
100 =
3.14
×
500 = 3.14
×
0.6 = 3.14
×
0.5 =
3.14
×
80 =
9
2
= 10
2
= 11
2
= 12
2
=
13
2
= 14
2
= 15
2
= 16
2
=
17
2
= 18
2
=
20
2
= 25
2
= 30
2
= 50
2
=
100
2
=
12
×
1.5 = 12
×
3= 12
×
4= 12
×
0.5=
12
×
5=
12
×
6= 12
×
7= 12
×
8= 12
×
9=
13
×
3=
13
×
4= 13
×
5= 13
×
6= 13
×
7=