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10 cards from this deck
Adding/subtracting, multiplying, and dividing
Line up the decimal points correctly
Directly below the decimal points in the calculation
Allowed; helps line up place values (e.g., 1.61.61.6 to 1.601.601.60)
Ignore decimal points; multiply as whole numbers
Count decimal places in both numbers; apply to answer
Convert the divisor into a whole number
Multiply both numbers by 10, 100, or 1000
The answer remains unchanged
To check if your answer is reasonable
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