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Addition and Subtraction - Math
Attempt the following questions.
Please read then answer the questions
Read the instructions carefully and answer all the questions.
Adiciones y sustracciones
Η πρόσθεση και η αφαίρεση στους φυσικούς αριθμούς
Answer the question carefully
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Adiciones y sustracciones de seis cifras
Read each questions carefully and answer
Simple Add. & Sub. (Abacus 1-40)
Read and answer the questions carefully
Commutative and associative laws of Addition