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 1 of 25 · the same problems every time you open this link.
1.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 people depend on bees
B.How bees make honey
C.How many bees live in a hive
2.Text 1 says beavers build dams from sticks and mud. Text 2 says the dams slow rivers and store water for dry summers. What does Text 2 add?
A.What the dams do for the land
B.How beavers build their dams
C.What beavers eat
3.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.When the trains crossed Britain
B.How fast the trains went
C.A problem the railways ran into
4.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.What turtles eat at sea
B.How the sand affects the young turtles
C.Where turtles lay their eggs
5.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.When Fleming made the discovery
B.How the discovery became a medicine
C.What color the mold was
6.Text 1 says Rontgen discovered X-rays in 1895. Text 2 says that within a year hospitals were using X-rays to find broken bones. What does Text 2 add?
A.Who discovered X-rays
B.How X-rays were named
C.How quickly the discovery was put to use
7.Text 1 says coral is built by tiny animals called polyps. Text 2 says warm water makes polyps push out the algae that feed them. What does Text 2 add?
A.Why coral can turn pale and starve
B.Where the biggest reef is
C.What builds coral
8.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
LessonPrint · RI.4.9 · Set 1 · free to copy for classroom use
Answer key — What One Adds to the Other
Set 1. Prints on its own sheet.
1.How people depend on bees
2.What the dams do for the land
3.A problem the railways ran into
4.How the sand affects the young turtles
5.How the discovery became a medicine
6.How quickly the discovery was put to use
7.Why coral can turn pale and starve
8.One effect the wolves had on other animals
Questions about What One Adds to the Other
What does the What One Adds to the Other worksheet cover?
It practices identifying what a second text adds to the first — 8 questions for Grade 4, all on Common Core RI.4.9: Combine two texts on one topic to write about it properly. The instruction to students is “Circle the right answer”, and the answer key follows on the next sheet.
Which Common Core standard does What One Adds to the Other practice?
CCSS.ELA-LITERACY.RI.4.9 — RI.4.9, under Reading: Informational Text for Grade 4. The published standard reads: “Integrate information from two texts on the same topic in order to write or speak about the subject knowledgeably.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
What One Adds to the Other is written for Grade 4, typically ages 9-10. It is one of the sheets on RI.4.9, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.
Does What One Adds to the Other come with an answer key?
Yes. All 8 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.
How many different versions of What One Adds to the Other can I print?
25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.
Is What One Adds to the Other free to print and photocopy?
Yes. What One Adds to the Other, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.
More practice for RI.4.9
Combine two texts on one topic to write about it properly.