Edmentum checking: Using online platform features combined with manual verification to ensure answer accuracy
Self-checking: Using mathematical methods to verify your own work
- Enter your answer in the Edmentum system
- Use Edmentum's immediate feedback feature
- Manually verify using inverse operations
- Estimate to check reasonableness
Calculate: 347 + 289 = 636
Input 636 in the answer field
System shows green checkmark ✓
Answer is confirmed correct
Use inverse operation: 636 - 289 = 347 ✓
636 - 347 = 289 ✓
Round to nearest ten: 350 + 290 = 640
636 is close to 640 ✓
347 + 289 = 636. Edmentum feedback confirms this is correct.
• Edmentum feedback: Use immediate system responses
• Manual verification: Always double-check with inverse operations
• Estimation: Confirm reasonableness with rounded numbers
Calculate: 523 - 278 = 245
Input 245 in the answer field
System shows green checkmark ✓
Answer is confirmed correct
Add difference back: 245 + 278 = 523 ✓
Round to nearest ten: 520 - 280 = 240
245 is close to 240 ✓
523 - 278 = 245. Edmentum feedback confirms this is correct.
• Subtraction verification: Add difference back to subtrahend
• Edmentum feedback: Use immediate system responses
• Estimation: Confirm reasonableness with rounded numbers
Calculate first: 1,247 + 876 = 2,123
Then: 2,123 - 329 = 1,794
Input 1,794 in the answer field
System shows green checkmark ✓
Answer is confirmed correct
Verify each step: 1,247 + 876 = 2,123 ✓
2,123 - 329 = 1,794 ✓
Round to hundreds: 1,200 + 900 - 300 = 1,800
1,794 is close to 1,800 ✓
1,247 + 876 - 329 = 1,794. Edmentum feedback confirms this is correct.
• Multi-step verification: Check each operation individually
• Edmentum feedback: Use immediate system responses
• Estimation: Confirm overall reasonableness
Immediate feedback: System instantly confirms if your answer is correct
Retry feature: Opportunity to correct mistakes and learn
Hint system: Guided support when you're stuck
Self-checking: Combining platform feedback with manual verification
- Calculate: Solve the problem using standard methods
- Input: Enter your answer in the system
- Review: Check immediate feedback
- Verify: Manually check your work
2,473 → 2,500 (round to hundreds)
1,892 → 1,900 (round to hundreds)
Estimate: 2,500 + 1,900 = 4,400
2,473 + 1,892 = 4,365
Input 4,365 in the system
System shows green checkmark ✓
Answer is confirmed correct
Exact: 4,365
Estimate: 4,400
Close match confirms reasonableness ✓
2,473 + 1,892 = 4,365. Edmentum feedback confirms this is correct.
• Estimation verification: Compare exact with estimate
• Edmentum feedback: Use immediate system responses
• Reasonableness: Confirm answer makes sense
Started with 3,247, sold 1,893, received 768
3,247 - 1,893 + 768
3,247 - 1,893 = 1,354
1,354 + 768 = 2,122
Enter 2,122 in the answer field
System shows green checkmark ✓
Answer is confirmed correct
Net change: -1,893 + 768 = -1,125
3,247 - 1,125 = 2,122 ✓
The store now has 2,122 pencils. Edmentum feedback confirms this is correct.
• Word problem solving: Translate words into mathematical operations
• Edmentum feedback: Use immediate system responses
• Context verification: Ensure answer makes sense in the situation