Let's solve each problem step by step:
---
1) \( 79 - 8 = \)
- Subtract 8 from 79:
\[
79 - 8 = 71
\]
-
Answer: \( 71 \)
---
2) \( 80 + \_\_\_ = 80 \)
- To find the missing number, we need a number that, when added to 80, results in 80. This means the missing number must be 0.
-
Answer: \( 0 \)
---
3) \( 8 \text{ tens} - 5 \text{ ones} = \_\_\_\_ \text{ tens } \_\_\_\_ \text{ ones} \)
- First, convert "8 tens" to a number:
\[
8 \text{ tens} = 80
\]
- Then subtract 5 ones (which is 5):
\[
80 - 5 = 75
\]
- Now, express 75 in terms of tens and ones:
\[
75 = 7 \text{ tens } 5 \text{ ones}
\]
-
Answer: \( 7 \text{ tens } 5 \text{ ones} \)
---
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 \_\_\_\_
- Subtract 1 from 69:
\[
69 - 1 = 68
\]
-
Answer: \( 68 \)
---
Final Answers:
\[
\boxed{
\begin{array}{l}
1) \, 71 \\
2) \, 0 \\
3) \, 7 \text{ tens } 5 \text{ ones} \\
4) \, 60 \\
5) \, 99 \\
6) \, 100 \\
7) \, 0 \\
8) \, 73 \\
9) \, 32 \\
10) \, 68 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of addition worksheet fill in the.
