问题
解答题
口算下面各题.
80÷4=
84÷4=
640÷8=
39÷3=
320÷8=
66÷6=
______×9=270
7×______=420.
答案
80÷4=20,
84÷4=21,
640÷8=80,
39÷3=13,
320÷8=40,
66÷6=11,
30×9=270,
7×60=420.
口算下面各题.
80÷4=
84÷4=
640÷8=
39÷3=
320÷8=
66÷6=
______×9=270
7×______=420.
80÷4=20,
84÷4=21,
640÷8=80,
39÷3=13,
320÷8=40,
66÷6=11,
30×9=270,
7×60=420.