Grade 1 Mathematics Weeks 33–34: Independent Practice Workbook
Complete the four original questions for each day after the lesson. Show a drawing or explain at least one answer. This student practice does not include answers.
Week 33: Mixed operation fluency within 20
Day 161: Add and subtract within twenty
1. 6 + 8 = ___
2. 15 − 7 = ___
3. 9 + 5 = ___
4. 17 − 6 = ___
Day 162: Use a make-ten strategy
1. 8 + 7 = ___; explain how to make ten.
2. 9 + 4 = ___; show the ten first.
3. 7 + 6 = ___; break an addend to make ten.
4. 6 + 5 = ___; show your ten-frame steps.
Day 163: Use related facts
1. If 8 + 6 = 14, then 14 − 8 = ___
2. If 7 + 5 = 12, then 12 − 5 = ___
3. Which addition fact checks 16 − 9 = 7?
4. Which subtraction fact checks 6 + 8 = 14?
Day 164: Choose the operation in a story
1. There were 14 marbles; 6 were lost. How many remain?
2. Nine shells plus 8 shells makes how many?
3. A basket has 12 apples, and 5 are eaten. How many are left?
4. Seven birds land near 8 birds. How many birds now?
Day 165: Review mixed facts independently
1. 11 + 7 = ___
2. 18 − 9 = ___
3. □ + 6 = 15
4. A child has 16 counters and gives away 7. How many remain?
Week 34: Explain mathematical reasoning
Day 166: Explain how you added
1. Show with a picture how 6 + 7 = ___.
2. Use a number line to add 8 + 5.
3. Explain a make-ten way to add 9 + 6.
4. Draw counters for 4 + 8 and find the total.
Day 167: Explain how you subtracted
1. Explain how taking away 5 from 14 leaves ___.
2. Draw a model for 16 − 8.
3. Show counting back for 12 − 7.
4. Use addition to check 15 − 9.
Day 168: Find and fix a mistake
1. A student says 7 + 5 = 11. Correct the sum.
2. A student says 16 − 8 = 9. Fix the result.
3. A student says 6 + 7 = 13. Is it correct?
4. A student says 18 − 9 = 8. Fix it.
Day 169: Compare two methods
1. Compare counting on and making ten for 8 + 5. What is the total?
2. Show two ways to check 14 − 6.
3. Find 7 + 9 using two strategies.
4. Explain why 11 − 4 and 5 + 2 have the same result.
Day 170: Defend a conclusion
1. Explain why 54 + 10 is 64.
2. Explain why 80 − 20 is 60.
3. Use a drawing to prove 13 − 5 = 8.
4. Why is 62 greater than 58?