Addition and Subtraction Within 20

Abacus
Question 1:
There are 9 metal spoons and 6 plastic spoons. Total how many spoons? Choose the correct answer.
Question 2:
There were 16 flowers on a plant, 8 are taken away. How many are left? Fill in the blanks.
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– Duane Habecker, Manasa

資訊: Addition and Subtraction Within 20