Let's solve each problem step by step:
---
1) 79 - 8 =
- Subtract 8 from 79:
\[
79 - 8 = 71
\]
-
Answer: 71
---
2) 80 + ______ = 80
- The equation states that adding a number to 80 results in 80. This means the missing number must be 0.
-
Answer: 0
---
3) 8 tens - 5 ones = _______ tens _______ ones
- First, convert "8 tens" and "5 ones" into their numerical forms:
- 8 tens = 80
- 5 ones = 5
- Now subtract:
\[
80 - 5 = 75
\]
- Convert 75 back into tens and ones:
- 75 = 7 tens and 5 ones
-
Answer: 7 tens 5 ones
---
4) 90 - 30 =
- Subtract 30 from 90:
\[
90 - 30 = 60
\]
-
Answer: 60
---
5) 99 + 0 =
- Adding 0 to any number does not change the number:
\[
99 + 0 = 99
\]
-
Answer: 99
---
6) When we subtract 0 from 100 we get ______
- Subtracting 0 from any number leaves the number unchanged:
\[
100 - 0 = 100
\]
-
Answer: 100
---
7) 92 - 92 =
- Subtracting a number from itself always results in 0:
\[
92 - 92 = 0
\]
-
Answer: 0
---
8) 63 + 10 =
- Add 10 to 63:
\[
63 + 10 = 73
\]
-
Answer: 73
---
9) The difference of 44 and 12 is ______
- The difference between two numbers is found by subtracting the smaller number from the larger number:
\[
44 - 12 = 32
\]
-
Answer: 32
---
10) One less than 69 is ______
- To find one less than a number, subtract 1:
\[
69 - 1 = 68
\]
-
Answer: 68
---
Final Answers:
1. 71
2. 0
3. 7 tens 5 ones
4. 60
5. 99
6. 100
7. 0
8. 73
9. 32
10. 68
Boxed Final Answer:
\[
\boxed{71, 0, 7 \text{ tens } 5 \text{ ones}, 60, 99, 100, 0, 73, 32, 68}
\]
Parent Tip: Review the logic above to help your child master the concept of addition worksheet fill.
