Worksheet
Math / Arithmetic practice - Adding, subtracting tens
1St grade
30
+
40
=
10
+
50
=
80
-
20
=
100
-
60
=
70
+
30
=
90
-
50
=
30
+
30
=
50
+
50
=
25
+
40
=
35
+
60
=
First grade practice
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