Question 1
Ling has 1 $5 coin and 4 20-cent coins. How much money is that?
Ling has 1 $5 coin and 4 20-cent coins. How much money is that?
Ling has 2 $1 coins and 4 20-cent coins. How much money is that?
Ling has 2 50-cent coins and 3 10-cent coins. How much money is that?
Five questions on this topic, marked at the end. No hints and no answers along the way — that is what makes the result mean something.
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