Read the word problem. Draw a tape diagram and a label. Write a number sentence and write a number statement that matches the story.
There were 6 turtles in the tank.Dad bought some more turtles.
Now, there are 12 turtles.
How many turtles did Dad buy?
From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 4, Topic E, Lesson 20. Internet. Available from http://www.engageny.org/resource/grade-1-mathemati...; accessed 26/Oct/2015.