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*Mrs. Wierzba's Class
Addition Story Problems
年级：
1st Grade,
2nd Grade
学科：
Math
标准：
Make sense of problems and persevere in solving them. (Math Practice 1:),
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. (M.2.OA.A.1.),
Flexibly and efficiently add and subtract within 20 using multiple mental strategies which may include counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13). (M.2.OA.B.2.)
学生说明
1. Read the directions on page 1.
2. On pages 2-5, read the story problems. Use the highlighter tool to highlight important information that will help you solve the problem.
3. Type the addition equation from the problem into the given box.
4. Solve the problem using paper and pencil. Be sure to show your work!
5. Use the camera tool to take a picture of your work and how you got your answer.
6. Type your final answer into the given box and be sure to include units.
7. Check over your work and answers on all pages. When finished, click the green check-mark to submit.
教师备注（学生不可见）
Your students will need to be able to add within 20. Answer key:
Page 2: 20 books
Page 3: 19 French fries
Page 4: 16 gallons of milk
Page 5: 15 ice cream cones
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