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Do addition using tally marks
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HOW TO USE
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In this exercise, you will use tally marks to solve the given addition problem.
▶ Look at the addition problem at the top.
▶ Find the bigger number and type it into the input box.
▶ Choose the tally marks that match the second number.
▶ Count the tally marks and add them to the bigger number.
▶ Use the number pad to enter your answer.
▶ Your answer will be checked automatically.
▶ If you want to try again, click the New Q uestion button.
Enjoy solving addition problems with tally marks!