Find the value of each expression mentally.

Elena has a bag of beads.
She takes out 9 beads.
11 beads are left in the bag.
How many beads were in the bag to start?
Solve the story problem.
Show your thinking using drawings, numbers, or words.

1. Discuss with your partner how the drawing shows each problem.

   

   1. Elena has 15 beads in a box.
      She uses 5 to make a bracelet.
      How many beads does Elena have left?

   2. Elena has some beads in a box.
      She uses 5 to make a bracelet.
      She has 10 beads left.
      How many beads were in Elena’s box?

   3. Elena has 15 beads in a box.
      She uses some to make a bracelet.
      She has 10 beads left.
      How many beads did Elena use to make a bracelet?