Problem Description:
The task is to fill in the missing numbers in each equation so that the sum equals 100. This involves basic arithmetic, specifically subtraction, since we need to determine what number, when added to the given number, results in 100.
Solution Approach:
For each equation of the form:
\[ \text{Given Number} + \_\_ = 100 \]
We can find the missing number by subtracting the given number from 100:
\[ \text{Missing Number} = 100 - \text{Given Number} \]
Let's solve each equation step by step.
---
Solving Each Equation:
#### First Column:
1. \( 97 + \_\_ = 100 \)
\[
100 - 97 = 3
\]
So, the missing number is \( 3 \).
2. \( 16 + \_\_ = 100 \)
\[
100 - 16 = 84
\]
So, the missing number is \( 84 \).
3. \( 7 + \_\_ = 100 \)
\[
100 - 7 = 93
\]
So, the missing number is \( 93 \).
4. \( 34 + \_\_ = 100 \)
\[
100 - 34 = 66
\]
So, the missing number is \( 66 \).
5. \( 74 + \_\_ = 100 \)
\[
100 - 74 = 26
\]
So, the missing number is \( 26 \).
6. \( 68 + \_\_ = 100 \)
\[
100 - 68 = 32
\]
So, the missing number is \( 32 \).
7. \( 35 + \_\_ = 100 \)
\[
100 - 35 = 65
\]
So, the missing number is \( 65 \).
8. \( 9 + \_\_ = 100 \)
\[
100 - 9 = 91
\]
So, the missing number is \( 91 \).
9. \( 94 + \_\_ = 100 \)
\[
100 - 94 = 6
\]
So, the missing number is \( 6 \).
#### Second Column:
1. \( 4 + \_\_ = 100 \)
\[
100 - 4 = 96
\]
So, the missing number is \( 96 \).
2. \( 23 + \_\_ = 100 \)
\[
100 - 23 = 77
\]
So, the missing number is \( 77 \).
3. \( 5 + \_\_ = 100 \)
\[
100 - 5 = 95
\]
So, the missing number is \( 95 \).
4. \( 2 + \_\_ = 100 \)
\[
100 - 2 = 98
\]
So, the missing number is \( 98 \).
5. \( 6 + \_\_ = 100 \)
\[
100 - 6 = 94
\]
So, the missing number is \( 94 \).
6. \( 80 + \_\_ = 100 \)
\[
100 - 80 = 20
\]
So, the missing number is \( 20 \).
7. \( 30 + \_\_ = 100 \)
\[
100 - 30 = 70
\]
So, the missing number is \( 70 \).
8. \( 60 + \_\_ = 100 \)
\[
100 - 60 = 40
\]
So, the missing number is \( 40 \).
9. \( 28 + \_\_ = 100 \)
\[
100 - 28 = 72
\]
So, the missing number is \( 72 \).
---
Final Answer:
\[
\boxed{
\begin{array}{ll}
97 + 3 = 100 & 4 + 96 = 100 \\
16 + 84 = 100 & 23 + 77 = 100 \\
7 + 93 = 100 & 5 + 95 = 100 \\
34 + 66 = 100 & 2 + 98 = 100 \\
74 + 26 = 100 & 6 + 94 = 100 \\
68 + 32 = 100 & 80 + 20 = 100 \\
35 + 65 = 100 & 30 + 70 = 100 \\
9 + 91 = 100 & 60 + 40 = 100 \\
94 + 6 = 100 & 28 + 72 = 100 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 100 addition facts worksheet.
