5.NBT.B.7

Add, subtract, multiply, and divide decimals to hundredths, connecting objects or drawings to strategies based on place value, properties of operations, and/or the relationship between operations. Relate the strategy to a written form.

Khan Academy Resources

Subtracting decimalsMultiplying decimals (no standard algorithm)Adding decimalsSubtracting decimals and whole numbers (tenths)Adding decimals and whole numbers (tenths)Estimating with dividing decimalsMultiply whole numbers and decimals less than 1Represent decimal multiplication with grids and area modelsDivide whole numbers to get a decimal (2-digit divisors)Multiply decimals tenthsDivide decimals by whole numbersDivide whole numbers by 0.1 or 0.01Multiply decimals and whole numbers visuallyAdding decimals (hundredths)Estimating with subtracting decimalsDivide whole numbers by decimalsUnderstand multiplying decimalsAdd decimals visuallyAdding decimals and whole numbers (hundredths)Adding decimals (tenths)Subtract decimals (hundredths)Multiply whole numbers and decimalsAdding decimals < 1 (hundredths)Subtract decimals < 1 (tenths)Subtracting decimals (tenths)Estimating with multiplying decimalsSubtract decimals visuallyDivide decimals by whole numbers visuallyAdding decimals < 1 (tenths)Divide whole numbers to get a decimal (1-digit divisors)Estimating with adding decimalsMultiply whole numbers by 0.1 and 0.01Divide whole numbers by decimals visuallySubtract decimals and whole numbers (hundredths)Multiply decimals (1&2-digit factors)Estimating with multiplying decimals and whole numbersMultiply decimals (up to 4-digit factors)Subtract decimals < 1 (hundredths)More advanced subtraction strategies with hundredthsSubtracting decimals: 10.1-3.93Subtracting decimals: 9.57-8.09Estimating decimal subtractionEstimating decimal multiplicationStrategies for subtracting more complex decimals with tenthsAdding decimals with ones, tenths and hundredthsUnderstanding decimal multiplicationEstimating decimal additionIntro to multiplying decimalsDivide whole numbers with decimal quotients: 78÷12Dividing a decimal by a whole number on the number lineDividing a decimal by a whole number exampleDivide whole numbers with decimal quotients: 5÷2Multiplying decimals using estimationDeveloping strategies for multiplying decimalsStrategies for multiplying decimals and whole numbersVisually dividing a whole number by a decimalPattern when dividing by tenths and hundredthsAdding decimals with hundredthsDividing whole numbers to get a decimalEstimating decimal division Division strategies for decimal quotientsEstimating with multiplying decimals and whole numbersStrategies for multiplying multi-digit decimals by whole numbersDividing whole numbers by decimals examplesStrategies for subtracting basic decimalsDeveloping strategies for multiplying 2-digit decimalsIntroduction to adding decimals: tenthsAdding decimals with ones and tenths partsSubtraction strategies with hundredthsDividing a decimal by a whole number with fraction modelsMultiplying decimals and whole numbers with visualsDividing a whole number by a decimal on a number line

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