Question: Robie bought 3 bags of chocolates. She gave the 2 bags to her brothers and sisters then bought another 3 bags. How many bags of chocolates were left? Think carefully first, then make a decision:
She was left with 3 - 2 = 1 bag of chocolate after she gave 2 bags to her brother and sisters. Therefore, the total number of bags of chocolates left after buying another 3 is 1 + 3 = 4. So the answer is 4.