Mental Computation: Addition and Subtraction of Intgers

Find the sum.

• 11

• -11

• 1

• -1

Find the sum.

• -12

• 12

• -6

• 6

Find the sum.

• -12

• 12

• -2

• 2

Find the sum.

• -2

• 2

• -22

• 22

Find the sum.

• -4

• 4

• -12

• 12

Find the sum.

• -1

• 1

• -13

• 13

Find the sum.

• -9

• 9

• -5

• 5

Find the difference.

• -9

• 9

• -3

• 3

Find the difference.

• -1

• 1

• -3

• 3

Find the difference.

• -14

• 14

• -2

• 2