To solve this worksheet, we need to find the missing number (addend) in each equation. The goal is to make sure both sides of the equal sign have the same value.
Let's go through them one by one:
Left Column:
1.
3 + ? = 8: We start with 3 and need to get to 8. Counting up from 3: 4, 5, 6, 7, 8. That's 5 numbers. So, 3 + 5 = 8.
2.
? + 2 = 9: We add 2 to a mystery number to get 9. If we take away 2 from 9, we get 7. So, 7 + 2 = 9.
3.
5 + ? = 6: We have 5 and need 6. Just one more makes 6. So, 5 + 1 = 6.
4.
1 + ? = 8: Start at 1 and count up to 8. You need to add 7. So, 1 + 7 = 8.
5.
? + 2 = 10: Add 2 to a number to reach 10. Take away 2 from 10, and you get 8. So, 8 + 2 = 10.
6.
6 + ? = 7: We have 6, need 7. Just add 1. So, 6 + 1 = 7.
Right Column:
1.
8 + ? = 10: Start at 8, count up to 10. You need 2 more. So, 8 + 2 = 10.
2.
? + 3 = 6: Add 3 to a number to get 6. Half of 6 is 3. So, 3 + 3 = 6.
3.
2 + ? = 4: Start at 2, count up to 4. You need 2 more. So, 2 + 2 = 4.
4.
5 + ? = 9: Start at 5, count up to 9. 6, 7, 8, 9. That's 4 steps. So, 5 + 4 = 9.
5.
? + 4 = 4: Add 4 to a number and still get 4. The only number that works is 0. So, 0 + 4 = 4.
6.
7 + ? = 8: Start at 7, count up to 8. Just 1 more. So, 7 + 1 = 8.
Final Answer:
Here are the completed equations with the missing addends filled in:
Left Column:
- 3 +
5 = 8
-
7 + 2 = 9
- 5 +
1 = 6
- 1 +
7 = 8
-
8 + 2 = 10
- 6 +
1 = 7
Right Column:
- 8 +
2 = 10
-
3 + 3 = 6
- 2 +
2 = 4
- 5 +
4 = 9
-
0 + 4 = 4
- 7 +
1 = 8
Parent Tip: Review the logic above to help your child master the concept of 1st grade homework worksheet.
