LLLedger Lab

MBA accounting · Modules 1 + 2

Make the numbers stick.

Short, no-typing drills for ratios and financial statements. Reveal, choose, repeat—and let recognition become recall.

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The concept to own

Why two balance sheets?

It is not really “averaging two years.” You are averaging two dates—the beginning and end of the same year whose income you are measuring.

Flow÷Average stock=Return
Dec. 31, 2024$80,000Beginning assets
2025 net income: $10,000
Dec. 31, 2025$120,000Ending assets
Step 1

($80,000 + $120,000) ÷ 2 = $100,000 average assets

Step 2

$10,000 ÷ $100,000 = 10% ROA

Best match: a full year of income over the assets available during that year.

The same logic applies to ROE: divide the year’s net income by average beginning-and-ending shareholders’ equity.

One-screen refresher

Know which statement you’re on.

01

Balance sheet

One-date snapshot of resources and claims.

Assets = Liabilities + EquityCash · Inventory · Payables · Debt · Retained earnings
02

Income statement

Performance across a period of time.

Revenues − Expenses = Net incomeSales · COGS · Wages · Rent · Depreciation
03

Cash flows

Why cash changed during the period.

Operating + Investing + FinancingBeginning cash + Net change = Ending cash