This document shows addition problems with cubes representing numbers in a base-10 number system. It presents 7 addition equations using cubes, with the sums calculated by counting the total number of cubes on each side of the equal sign.

1. Sumas con base de 10
Cuenta cuántos cubos hay y calcula
+
+ =
+
+ =
+
+ =
+

2. + =
+
+ =
+
+ =
+
+ =
+
+ =

3. +
+ =