The image shows a worksheet titled "1st Grade Mad Minutes," which is designed to help first-grade students practice basic arithmetic skills, specifically addition and subtraction. Below is the solution for the main section of the worksheet (the top part with the frog illustration) along with an explanation.
Worksheet Section:
```
8 + 4 = __ 1 + 4 = __
1 + 9 = __ 6 + 3 = __ 8 + 1 = __
+ 3 + 6 + 5 + 6 + 5
+ 7 + 4 + 7 + 2
```
Step-by-Step Solution:
####
First Row:
1.
8 + 4 = ?
- Add 8 and 4: \( 8 + 4 = 12 \)
- Answer:
12
2.
1 + 4 = ?
- Add 1 and 4: \( 1 + 4 = 5 \)
- Answer:
5
####
Second Row:
3.
1 + 9 = ?
- Add 1 and 9: \( 1 + 9 = 10 \)
- Answer:
10
4.
6 + 3 = ?
- Add 6 and 3: \( 6 + 3 = 9 \)
- Answer:
9
5.
8 + 1 = ?
- Add 8 and 1: \( 8 + 1 = 9 \)
- Answer:
9
####
Third Row:
6.
+ 3
- This indicates adding 3 to the previous result in the column.
- From the second row:
- First column: \( 10 + 3 = 13 \)
- Second column: \( 9 + 3 = 12 \)
- Third column: \( 9 + 3 = 12 \)
7.
+ 6
- Add 6 to the previous result in the column.
- From the second row:
- Fourth column: \( 9 + 6 = 15 \)
8.
+ 5
- Add 5 to the previous result in the column.
- From the second row:
- Fifth column: \( 9 + 5 = 14 \)
####
Fourth Row:
9.
+ 7
- Add 7 to the previous result in the column.
- From the third row:
- First column: \( 13 + 7 = 20 \)
10.
+ 4
- Add 4 to the previous result in the column.
- From the third row:
- Second column: \( 12 + 4 = 16 \)
11.
+ 7
- Add 7 to the previous result in the column.
- From the third row:
- Third column: \( 12 + 7 = 19 \)
12.
+ 2
- Add 2 to the previous result in the column.
- From the third row:
- Fourth column: \( 15 + 2 = 17 \)
Final Answers:
```
8 + 4 = 12 1 + 4 = 5
1 + 9 = 10 6 + 3 = 9 8 + 1 = 9
+ 3 + 6 + 5 + 6 + 5
+ 7 + 4 + 7 + 2
Final Results:
20 16 19 17 14
```
Explanation:
- The worksheet involves simple addition problems.
- Each column builds upon the previous result by adding the numbers indicated in the subsequent rows.
- Students are expected to perform quick mental calculations to complete the worksheet efficiently.
Final Answer:
\[
\boxed{20, 16, 19, 17, 14}
\]
Parent Tip: Review the logic above to help your child master the concept of 1st grade math worksheet addition and subtraction.
