Urgent these are just 3 easy fill in the blank math problems.

1. when adding *blank* signs in addition you should add and keep the sign

2. when subtracting integers you can change the minus to a plus and take the *blank* of the next number. then follow addition integer rules.

3. when adding *blank* signs in addition you should subtract and keep the sign of the larger number.

Match the scale and the actual area to the area of the corresponding scale drawing. scale: 1 inch to 4 feet actual area: 128 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 5 feet actual area: 225 square feet area of scale drawing scale and actual area scale drawing area: 3 square inches arrowright scale drawing area: 8 square inches arrowright scale drawing area: 4 square inches arrowright scale drawing area: 9 square inches arrowright