Let's solve each word problem step by step and explain the solution clearly.
---
Problem 1:
On Tuesday, Simon saw 18 birds on one tree and 14 birds on another. On Wednesday, each tree only had 7 birds. How many birds flew away?
####
Step-by-step Solution:
- Total birds on Tuesday:
$$
18 + 14 = 32 \text{ birds}
$$
- On Wednesday, each tree has 7 birds:
$$
7 + 7 = 14 \text{ birds}
$$
- Birds that flew away:
$$
32 - 14 = 18 \text{ birds}
$$
✔ Answer: 18 birds flew away.
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Problem 2:
Amy saved $30 and her sister saved $40. They each spent half their money. If they join their money together, how much would they have now?
####
Step-by-step Solution:
- Amy spent half of $30:
$$
\frac{1}{2} \times 30 = 15 \Rightarrow \text{She has } 30 - 15 = 15 \text{ left}
$$
- Sister spent half of $40:
$$
\frac{1}{2} \times 40 = 20 \Rightarrow \text{She has } 40 - 20 = 20 \text{ left}
$$
- Together:
$$
15 + 20 = 35
$$
✔ Answer: $35
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Problem 3:
Josh picked 23 flowers and his brother picked 17. 14 of them died on the way home. How many flowers did they have?
####
Step-by-step Solution:
- Total flowers picked:
$$
23 + 17 = 40 \text{ flowers}
$$
- Flowers that died: 14
- Flowers remaining:
$$
40 - 14 = 26
$$
✔ Answer: 26 flowers
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Problem 4:
At Sam's school, there are 240 students. If 50 students were away, how many students were at school?
####
Step-by-step Solution:
- Total students: 240
- Students away: 50
- Students present:
$$
240 - 50 = 190
$$
✔ Answer: 190 students
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✔ Final Answers:
1.
18 birds flew away
2.
$35
3.
26 flowers
4.
190 students
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Parent Tip: Review the logic above to help your child master the concept of problem solving addition worksheet 2nd.