Khan 4th Grade Math

📝 Teacher Audit & Score Adjustments

• Question 1b (0.5 / 1 pt — Half Credit): Wrote thousands. Correctly identified the place value, but missed the digit value ($6,000$). Awarded 0.5 points.
• Question 4c (0.5 / 1 pt — Half Credit): Wrote 810 for $81\text{ ones} \times 10 = [\quad]\text{ tens}$. Product $81 \times 10 = 810$, but missed the unit word tens ($81\text{ tens}$). Awarded 0.5 points.
• Question 4d (0.5 / 1 pt — Half Credit): Wrote 660 for $66\text{ hundreds} \div 10 = [\quad]\text{ tens}$. $66\text{ hundreds} = 6,600 \div 10 = 660 = 66\text{ tens}$. Awarded 0.5 points for consistent unit-label grading with 4c.
• Question 10b (0 / 2 pts — Incorrect): Wrote 28,500 and 28,999. Both round to 29,000. Correct bounds are 27,500 and 28,499.
• Question 12b (0 / 1 pt — Incorrect): Multi-digit subtraction $500,024 - 268,759$. Wrote 231,165. Correct is 231,265 (regrouping slip across consecutive zeros).
• Question 13b (2 / 2 pts — Accepted): In $7 \times E = 42$, wrote 7 x 6=42 and solved Eli = 6. Marked fully accepted because the mathematical relationship and arithmetic are 100% understood; variable notation can be reinforced later. Awarded full credit (2/2).
• Question 18a (0 / 1 pt — Incorrect): $3 \times 2,103$. Wrote 6306 instead of 6,309 ($3 \times 3$ slip).
• Question 18b & 18c (3 / 3 pts — Full Credit): Completed correctly in student submission and awarded full credit.