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1. Addition form with numbers added on later(1)
2. Addition form being added together(2) 3. Addition by mental calculation by counting all and adding (1) 4. Addition by mental calculation by counting the added number(2) 5. Adding arter changing two numbers 6. Addition of which the sum reaches 9 7. Subtraction from of getting a remainder(1) 8. Subtraction from of getting a remainder(2) 9. Subtraction by mental calculatuon subtraction by counting reverse as much as the suvtacted number 10. Subtraction by mental calculatuon subtraction by counting upward as much as the suvtacted difference(2) 11. Subtraction with the numbers smaller than 10 12 Brotherly co-relationship of addition and subtraction froms Achievement test Answers |