Question

Emma has addressed seven invitations to her

birthday party. This is one more than half of the
invitations that she intends to send. How many
invitations does she intend to send?

Answer 1

12

Explanation:

7-1=6

6x2=12

Answer 2

12

Explanation:

This can be solved by working backwards.

7 is one more than half the number of invitations.

Subtract 1. 6 is half the number of invitations.

Double.

12 is the full number of invitations.

Algebra (if you must!):

x = number of invitations

x/2 + 1 = 7

Subtract 1.

x/2 = 6

Multiply by 2.

x = 12