Math Fun
Add & Subtract Lessons
Add or subtract whole tens mentally
Free lesson plan from Homeschool Math.net
Adding ten to any number is easy. Look at the pictures.
+
=
32
+
10
=
42
+
=
54
+
10
=
64
+
=
__
+
10
=
__
+
=
__
+
10
=
__
The _________ digit does not change.
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