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Stanford 10 Primary 2

Stanford 10 Primary 2. Mathematics Problem Solving. Problem Solving. Ashley lost 23 marbles. She looked under the couch and found 17 of them. How many more marbles are missing? Remember, she lost 23 marbles and found 17 of them. 40. 6. 14. 16. 13. Representation.

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Stanford 10 Primary 2

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  1. Stanford 10Primary 2 Mathematics Problem Solving

  2. Problem Solving • Ashley lost 23 marbles. She looked under the couch and found 17 of them. How many more marbles are missing? Remember, she lost 23 marbles and found 17 of them. 40 6 14 16 13

  3. Representation • Which group of numbers has the largest number in the largest box, the smallest number in the smallest box and the middle number in the middle box? 17 54 78 13 112 45 119 64 21 32 76 12 132 23 61

  4. Problem Solving • Carlton has 18 crayons in his case. His friend gives him 13 more crayons. How many crayons does Carlton now have? Remember, he had 18, and then his friend gave him 13 more. 5 21 25 31 15

  5. Connections • Jennifer was sewing buttons on shirts. The table shows the number of buttons she sewed on to make different numbers of shirts. If the pattern in the table continued, how many buttons are needed for 4 shirts?

  6. Problem Solving • Michelet is helping at an animal shelter. There are 24 puppies waiting to be rescued by families. If 7 puppies are taken home by families, how many puppies are still at the shelter? Remember, there were 24 puppies and 7 were taken to new homes. 23 13 17 31 21

  7. Reasoning • Ms. Murray asked four of her students to work together and find a total of 30 different examples of shells. The tally chart shows the number of shells each student found. The tally marks for Xavier are missing. If the group found 30 shells, how many did Xavier find? Shells Collected by Ms. Murray’s Students Javiana Neven Bobby Xavier

  8. Problem Solving • Ms. Crampton has 12 girls in her class. The rest of her students are boys. There are a total of 21 students in Ms. Crampton’s class. If 12 students are girls, how many boys are there? 33 8 23 11 9

  9. Connections • Carrie is playing a matching card game. She has to turn over two cards that match. She turned over the card with the flower on it. Ashley remembers the other flower is three cards above and one card to the right of the flower. Which letter is the card she needs to pick? A B C D E F G H I J K L M N O P Q R S T U V W

  10. Money • Celagi would like to buy a hamburger at McDonalds. A hamburger will cost 67 cents. Which set of coins shows 67 cents? A B C

  11. Place Value • What is the value of the underlined digit in each number? 318 495 742 362 168

  12. Problem Solving • Jacquez wants to give mini donuts to each of his friends for his birthday. Jacquez has 6 friends and he wants to give each friend 4 mini donuts. How many mini donuts should he buy so each friend gets 4? Remember, he has 6 friends and wants to give each 4 mini donuts. 20 10 24 2 12

  13. Data • The chart below shows the number of books read by students in Ms. Nadler’s class. If each picture of a book stands for 2 books read by a student, how many books did Michael read? Remember, each picture of a book stands for 2 books read. Jaylah = 2 books Michael Aleira Maurice

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