Page 237 - MATH NIVEL 1
P. 237
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MATHEMATICS 1st Grade - Primary Education
3. Fill in the number before and after.
843
905
789
899
995
4. Perform the operations.
3 2 5 + 4 2 7 +
3 1 5 3 1 3
7 8 6 – 8 2 7 –
4 3 5 5 8 2
236
