1. Big Idea Topic 6

2. What is a strategy can you use to add 43 +30? Diane has 15 jewels. She buys a bag of 40 more. How many does she have now? Write an addition story using 30 and another two- digit number. Explain how you found the sum? Beginning with 37, how many tens would you need to get to the number 97? Draw a picture to prove your answer.. When tens are added to a two-digit number how does the tens digit in the sum change? 6-1

3. If you have 17, how many ones do you need to make the next ten? Explain your answer. How many strategies can you demonstrate to add 18 + 5? Show your work. Draw a picture to show how to add a one-digit number to 19. Create a word problem to match your diagram. Would you use make-ten strategy to make 36+3? How can you add a one- digit number to a two- digit number using the make-ten strategy? 6-2

4. Make a list of vocabulary words that you can use to solve addition problems. A leopard gecko ate 34 crickets. Later that day he ate 14 more. How many crickets did he eat in all? Explain your answer and what strategy you used. Write a real-life story about 13 + 31. Solve How many tens are in 47 + 30? If you add three more tens, how many tens will you have? Write the steps that led you to the correct answer. What are two different ways of adding tens and ones mentally? 6-3

5. 50+___=77, 60+___=87 What would the next three number sentences be? How many tens patterns can you create without using a zero? (57,67,77…, 33,43,53…) What are the steps you use to add on a hundred chart?(41+___=100) How can you use a hundred chart to add 39+17? Explain your answer. How can patterns on the hundred chart be used to think about adding two-digit numbers? 6-4

6. Create a challenging pattern about owls and rodents for a friend to solve using only two digit numbers.? You want to earn a T-shirt for the 100 Mile Club. How many miles should you run each day to reach your goal? What are some patterns for adding 9? A bumblebee bat flies 1 mile Sunday, 6 miles Tuesday, and 11 miles Wednesday. How many miles do you predict he will fly on Friday? How can looking at a pattern help you solve problems? 6-5