问题 解答题
算一算、填一填
42km2=______m2
3600t=______kg
7200dm=______m25L+7000ml=______L
6305kg=6t+______kg
3
12
+
7
12
=______
1-
5
9
=______
11
15
-
5
15
+
6
15
=______.
答案

42km2=42000000m23600t=3600000kg
7200dm=720m25L+7000ml=32L
6305kg=6t+305kg
3
12
+
7
12
=
5
6
1-
5
9
=
4
9
11
15
-
5
15
+
6
15
=
4
5
故答案为:42000000;3600000;720;32;305;
5
6
4
9
4
5

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