We continue to use the blue counters to represent positive numbers and the red counters to represent negative numbers. When there are enough counters of a certain color to take away, subtract. But, wh...We continue to use the blue counters to represent positive numbers and the red counters to represent negative numbers. When there are enough counters of a certain color to take away, subtract. But, when there are not enough of the counters to take away, add neutral pairs and then subtract. The Subtraction Property states that that subtraction of signed numbers can be done by adding the opposite.
We continue to use the blue counters to represent positive numbers and the red counters to represent negative numbers. When there are enough counters of a certain color to take away, subtract. But, wh...We continue to use the blue counters to represent positive numbers and the red counters to represent negative numbers. When there are enough counters of a certain color to take away, subtract. But, when there are not enough of the counters to take away, add neutral pairs and then subtract. The Subtraction Property states that that subtraction of signed numbers can be done by adding the opposite.