In this booklet students are going to find the missing addend or subtrahend that is behind the coin.They will use one of the strategies they learned in class to add and subtract within 1,000. Some strategies they may use are; concrete models, drawings, number line, and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. They will next find the golden coin with the missing number, cut it out and paste it on top of the blank coin in