Skip to content
LessonPrint

What One Adds to the Other is a free printable Grade 4 English worksheet on identifying what a second text adds to the first, aligned to Common Core standard RI.4.9. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 9 of 25 · the same problems every time you open this link.

Next set

One paper per student

12345678910111213141516171819202122232425

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

What One Adds to the Other

RI.4.9

NameDate

Circle the right answer.

1.Text 1 says sea turtles lay their eggs on beaches. Text 2 says the warmth of the sand decides whether the hatchlings are male or female. What does Text 2 add?
  • A.How the sand affects the young turtles
  • B.Where turtles lay their eggs
  • C.What turtles eat at sea
2.Text 1 says the Romans built straight roads across Britain. Text 2 says soldiers could march twenty miles a day on them. What does Text 2 add?
  • A.Who built the roads
  • B.Why the roads mattered to the army
  • C.What the roads were made of
3.Text 1 says Fleming noticed mold killing germs in 1928. Text 2 says Florey and Chain found how to make penicillin in large amounts. What does Text 2 add?
  • A.What color the mold was
  • B.How the discovery became a medicine
  • C.When Fleming made the discovery
4.Text 1 says trains crossed Britain by the 1840s. Text 2 says each town kept its own time, so schedules were confusing. What does Text 2 add?
  • A.How fast the trains went
  • B.A problem the railways ran into
  • C.When the trains crossed Britain
5.Text 1 says volcanoes form where hot rock rises. Text 2 says the ash from one eruption cooled the whole world for a year. What does Text 2 add?
  • A.What lava is made of
  • B.How far an eruption's effects can reach
  • C.Where volcanoes form
6.Text 1 says honeybees live in hives of thousands. Text 2 says farmers rent hives so bees will pollinate their orchards. What does Text 2 add?
  • A.How bees make honey
  • B.How many bees live in a hive
  • C.How people depend on bees
7.Text 1 says wolves were brought back to Yellowstone in 1995. Text 2 says elk stopped grazing by the rivers once the wolves returned. What does Text 2 add?
  • A.How many wolves there were
  • B.One effect the wolves had on other animals
  • C.The year the wolves returned
8.Text 1 says the Great Wall of China is thousands of kilometers long. Text 2 says it was built over many centuries by different rulers. What does Text 2 add?
  • A.How long it took and who built it
  • B.What country the wall is in
  • C.How long the wall is

LessonPrint · RI.4.9 · Set 9 · free to copy for classroom use

Answer key — What One Adds to the Other

Set 9. Prints on its own sheet.

  1. 1.How the sand affects the young turtles
  2. 2.Why the roads mattered to the army
  3. 3.How the discovery became a medicine
  4. 4.A problem the railways ran into
  5. 5.How far an eruption's effects can reach
  6. 6.How people depend on bees
  7. 7.One effect the wolves had on other animals
  8. 8.How long it took and who built it

Last reviewed 2026-09-05. Aligned to RI.4.9 of the Common Core State Standards for English Language Arts.