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Recap: Add and Subtract

Part of the Decimals, Percents & Ratios section of Coddy's Pre-Algebra journey. Lesson 10 of 56.

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Challenge

Work out 12.4 - 5.85 + 0.6, left to right, one step per line.

Try it yourself

12.4 - 5.85 + 0.6

Simplify the expression

All lessons in Decimals, Percents & Ratios

1Decimals

Place ValueDecimals on the LineComparing DecimalsRounding DecimalsRecap: Decimals

4Dividing Decimals

Dividing by a DecimalDividing by 10 and 100Dividing by a Whole NumberUnit PriceRecap: Dividing

7Percent Problems

Finding the WholeDiscountsTax and TipsPercent IncreasePercent DecreaseRecap: Percent Problems

10Proportions

Solving a ProportionCross ProductsScale DrawingsPercent as a ProportionRecap: Proportions

2Adding Decimals

Adding DecimalsSubtracting DecimalsNegative DecimalsMaking ChangeRecap: Add and Subtract

5Fractions and Decimals

Fraction to DecimalDecimal to FractionRepeating DecimalsOrdering Both KindsRecap: Fractions and Decimals

8Ratios

What a Ratio IsSimplifying RatiosEquivalent RatiosSharing in a RatioRecap: Ratios

11Final Challenges

Final: Decimals and PercentsFinal: The JacketFinal: Out of a HundredFinal: The Apple StallFinal: On the Line

3Multiplying Decimals

Multiplying DecimalsTimes 10, 100, 1000Bigger ProductsBuying by WeightRecap: Multiplying

6Percent Basics

What Percent MeansPercent of a NumberPercent as a DecimalWhat Percent Is ItRecap: Percent Basics

9Rates

Unit RatesThe Better BuySpeed, Distance, TimeConverting UnitsRecap: Rates