🧮 Mental Math Strategies — Making Tens and Doubles
Explore the Coral Reef with Wanda!
Read the Story First!
🔤 Words to Know
Mental — A key concept in making tens and doubles.
Making — Part of learning about mental math strategies.
"38 + 25... I will use making tens!" said Wanda. "Take 2 from 25 and give it to 38. Now it is 40 + 23 = 63!"
"Doubles help too," said Scuba Bob. "7+7=14 is a double. 7+8 is a double plus 1 = 15!"
🧠 Answer the Questions
Read each question carefully. Pick the best answer!
What was the math topic?
Who helped Wanda learn?
What is mental?
34 + 25 = ?
67 - 23 = ?
What comes first when adding two-digit numbers?
45 + 38 = ?
90 - 56 = ?
What is making?
52 + 19 = ?