Question
5. Complete these number sentences. Check each answer by substitution. a) \( 23405+\square=42000 \) b) \( \square+350000=500000 \) c) \( \square-45347=950000 \)
Ask by Beck Hampton. in South Africa
Feb 04,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
a) \( \square = 18,595 \)
b) \( \square = 150,000 \)
c) \( \square = 995,347 \)
Solution
Sure, let's complete each number sentence and verify the solutions by substitution.
---
**a) \( 23,405 + \square = 42,000 \)**
**Solution:**
To find the value of the square:
\[
\square = 42,000 - 23,405 = 18,595
\]
**Check by Substitution:**
\[
23,405 + 18,595 = 42,000
\]
---
**b) \( \square + 350,000 = 500,000 \)**
**Solution:**
To find the value of the square:
\[
\square = 500,000 - 350,000 = 150,000
\]
**Check by Substitution:**
\[
150,000 + 350,000 = 500,000
\]
---
**c) \( \square - 45,347 = 950,000 \)**
**Solution:**
To find the value of the square:
\[
\square = 950,000 + 45,347 = 995,347
\]
**Check by Substitution:**
\[
995,347 - 45,347 = 950,000
\]
---
Each solution satisfies the original equation when substituted back, confirming that the answers are correct.
Reviewed and approved by the UpStudy tutoring team
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Explain 
Simplify this solution The Deep Dive
To complete these number sentences: a) For the first equation, \( 23405+\square=42000 \), we subtract \( 23405 \) from \( 42000 \): \( \square = 42000 - 23405 = 18595 \). Check: \( 23405 + 18595 = 42000 \). Perfect! b) In the second equation, \( \square+350000=500000 \), subtract \( 350000 \) from \( 500000 \): \( \square = 500000 - 350000 = 150000 \). Check: \( 150000 + 350000 = 500000 \). Spot on! c) For the last equation, \( \square-45347=950000 \), we add \( 45347 \) to \( 950000 \): \( \square = 950000 + 45347 = 995347 \). Check: \( 995347 - 45347 = 950000 \). Success!
