🧮 Estimation — Rounding to the Nearest Ten
Explore the Coral Reef with Scuba Bob!
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Read the Story First!
🔤 Words to Know
Estimation — A key concept in rounding to the nearest ten.
Rounding — Part of learning about estimation.
"About how many fish? 47 is close to 50. 23 is close to 20," said Scuba Bob.
"When rounding to the nearest ten, look at the ones digit. 5 or more rounds up. 4 or less rounds down," said Finn.
"47 rounds to 50. 23 rounds to 20. Estimate: 50 + 20 = about 70!"
🧠 Answer the Questions
Read each question carefully. Pick the best answer!
Question 1📖 Comprehension
What was the math topic?
Question 2📖 Comprehension
Who helped Scuba Bob learn?
Question 3🔤 Vocabulary
What is estimation?
Question 4🧮 Math
34 + 25 = ?
Question 5🧮 Math
67 - 23 = ?
Question 6📖 Comprehension
What comes first when adding two-digit numbers?
Question 7🧮 Math
45 + 38 = ?
Question 8🧮 Math
90 - 56 = ?
Question 9🔤 Vocabulary
What is rounding?
Question 10🧮 Math
52 + 19 = ?
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Quiz Complete!
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