Worksheet: Addition Sentences within 20

In this worksheet, we will practice finding the unknown in an addition story problem by completing an equation matching a picture or model.

Q1:

Mariam planted 7 roses and 5 sunflowers in her garden. Choose the addition sentence that shows this using “?” for the total number of flowers.

  • A12 + 5 = ?
  • B5 + ? = 7
  • C7 + ? = 12
  • D7 + 5 = ?
  • E7 + 12 = ?

Q2:

There are 6 brown cows in a field. They are joined by 5 white cows. Which expression shows how many cows are in the field now?