Problem Analysis:
The problem involves a chart showing the number of crayons in a box, categorized by color. The task is to solve several word problems based on addition and subtraction using the data provided in the chart.
#### Chart Data:
- Red: 10
- Yellow: 6
- Green: 7
- Blue: 8
Step-by-Step Solution:
---
####
1. How many red and yellow crayons are there altogether?
-
Given: Red = 10, Yellow = 6
-
Calculation: Add the number of red and yellow crayons.
\[
10 + 6 = 16
\]
-
Answer: 16
---
####
2. How many more red crayons are there than green crayons?
-
Given: Red = 10, Green = 7
-
Calculation: Subtract the number of green crayons from the number of red crayons.
\[
10 - 7 = 3
\]
-
Answer: 3
---
####
3. How many crayons are in the box, altogether?
-
Given: Red = 10, Yellow = 6, Green = 7, Blue = 8
-
Calculation: Add the total number of crayons of all colors.
\[
10 + 6 + 7 + 8 = 31
\]
-
Answer: 31
---
####
4. Dan took all the green crayons and half the yellow crayons. How many crayons did he take altogether?
-
Given: Green = 7, Yellow = 6
-
Calculation:
1. Dan took all the green crayons: 7
2. Dan took half the yellow crayons: \( \frac{6}{2} = 3 \)
3. Total crayons Dan took: \( 7 + 3 = 10 \)
-
Answer: 10
---
####
5. Jo took 3 red and 4 green crayons from the box. How many red and green crayons were left, altogether?
-
Given: Red = 10, Green = 7
-
Calculation:
1. Red crayons left: \( 10 - 3 = 7 \)
2. Green crayons left: \( 7 - 4 = 3 \)
3. Total red and green crayons left: \( 7 + 3 = 10 \)
-
Answer: 10
---
####
6. Sam took half the blue crayons. How many blue crayons were left?
-
Given: Blue = 8
-
Calculation:
1. Sam took half the blue crayons: \( \frac{8}{2} = 4 \)
2. Blue crayons left: \( 8 - 4 = 4 \)
-
Answer: 4
---
####
7. How many more red and green crayons are there altogether than yellow and blue?
-
Given: Red = 10, Green = 7, Yellow = 6, Blue = 8
-
Calculation:
1. Total red and green crayons: \( 10 + 7 = 17 \)
2. Total yellow and blue crayons: \( 6 + 8 = 14 \)
3. Difference: \( 17 - 14 = 3 \)
-
Answer: 3
---
Final Answers:
1.
16
2.
3
3.
31
4.
10
5.
10
6.
4
7.
3
\boxed{16, 3, 31, 10, 10, 4, 3}
Parent Tip: Review the logic above to help your child master the concept of word problems addition and subtraction worksheet.
