Grade 2 | MATHEMATICS
WEEK 5 • PRACTICE WORKBOOK • DAYS 21–25
Read the matching lesson in the Week 5 Student Textbook first. Write each answer on the line below its question. Day 25 is answered on your own.
Fillable Practice PDF: Download or open the Week 5 fillable workbook. Type answers into the labeled fields, then save your completed copy.
Week 5 Student Textbook | Week 5 Practice Workbook | Week 5 Teacher Guide | Week 4 Student Textbook | Week 6 Student Textbook | Grade 2 index
Day 21: Add Three Two-Digit Numbers
- 14 + 22 + 31 = ?
Answer: _________________________________________________
- 40 + 25 + 13 = ?
Answer: _________________________________________________
- 33 + 11 + 24 = ?
Answer: _________________________________________________
- A class collected 12 leaves, 23 rocks and 31 acorns. How many items did they collect?
Answer: _________________________________________________
- Explain why adding the tens first and then the ones gives the right total.
Answer: _________________________________________________
_____________________________________________
Day 22: When the Ones Make a New Ten
- 28 + 15 + 12 = ?
Answer: _________________________________________________
- 46 + 19 + 21 = ?
Answer: _________________________________________________
- 35 + 35 + 17 = ?
Answer: _________________________________________________
- Which two ones digits make a ten in 18 + 34 + 22?
Answer: _________________________________________________
- In 28 + 15 + 12, the ones add to 15. Explain what happens to those 15 ones.
Answer: _________________________________________________
_____________________________________________
Day 23: Add Four Two-Digit Numbers
- 10 + 20 + 15 + 24 = ?
Answer: _________________________________________________
- 13 + 27 + 22 + 11 = ?
Answer: _________________________________________________
- 25 + 16 + 25 + 14 = ?
Answer: _________________________________________________
- Four friends picked 14, 21, 16 and 19 berries. How many did they pick in all?
Answer: _________________________________________________
- Explain why you may add the four numbers in any order and still get the same total.
Answer: _________________________________________________
_____________________________________________
Day 24: Explain Your Strategy
- Use tens and ones to add 45 + 27.
Answer: _________________________________________________
- Use adding on to solve 56 + 29. Write each step.
Answer: _________________________________________________
- Leo says 34 + 18 = 42. Find the correct total.
Answer: _________________________________________________
- Describe one mistake Leo might have made.
Answer: _________________________________________________
- Explain why trading ten ones for one ten does not change the total.
Answer: _________________________________________________
_____________________________________________
Day 25: Independent Check: Adding Many Numbers
Reading log
| Child | Pages read |
|---|---|
| Ana | 26 |
| Ben | 17 |
| Cal | 34 |
| Dee | 13 |
Answer on your own. An adult may read the questions aloud but should not give the answers.
- How many pages did Ana, Ben and Cal read together?
Answer: _________________________________________________
- How many pages did all four children read?
Answer: _________________________________________________
- 29 + 15 + 31 = ?
Answer: _________________________________________________
- Which two numbers in the reading log make an easy pair? Why?
Answer: _________________________________________________
- Explain how you added the four numbers in the reading log.
Answer: _________________________________________________
_____________________________________________
Week 5 Student Textbook | Week 5 Practice Workbook | Week 5 Teacher Guide | Week 4 Student Textbook | Week 6 Student Textbook | Grade 2 index