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A series of number calculations to be performed and written on a whiteboard. Engage in mental math and problem-solving skills.
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Think of a number. Double it. Add 10. Halve it. Take away your original number. Write the answer on your whiteboard.
5 Write the answer on your whiteboard.
n 2n + 10 n + 5 n + 5 - n 2n Think of a number. Double it. Add 10. Halve it. Take away your original number. Write the answer on your whiteboard.
Think of a number. Add 1. Double it. Take away 3. Add your original number. Add 7. Divide by 3. subtract your original number. Write the answer on your whiteboard.
2 Write the answer on your whiteboard.
x 2 3x + 6 3x - 1 2x + 2 x + 1 x + 2 2x + 2 - 3 2x - 1 Think of a number. Add 1. Double it. Take away 3. Add your original number. Add 7. Divide by 3. subtract your original number. Write the answer on your whiteboard.