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# Module 1: Place value and decimal fractions

Learn

Place value with decimalsDecimal place value reviewMultiplying and dividing by 10, 100, 1000Multiplying and dividing by powers of 10Introduction to powers of 10Powers of 10 reviewMultiplying decimals by 10, 100, and 1000Dividing decimals by 10, 100, and 1000Using exponents with powers of 10Exponents and powers of 10 patternsThousandths on the number lineFractions as division by power of 10Comparing decimal place values

Practice

Place value namesGet 5 of 7 questions to level up!

Value of a digitGet 5 of 7 questions to level up!

Multiply and divide by powers of 10Get 5 of 7 questions to level up!

Powers of tenGet 5 of 7 questions to level up!

Multiply and divide decimals by 10Get 3 of 4 questions to level up!

Multiply and divide decimals by 10, 100, and 1000Get 3 of 4 questions to level up!

Decimals on the number line: thousandthsGet 3 of 4 questions to level up!

Compare decimal place valueGet 3 of 4 questions to level up!

Learn

Write decimal in expanded formDecimals in expanded form reviewDecimals in written form (hundredths)Decimals in written form (thousandths)Decimals in written form reviewExpressing decimals in multiple formsVisual understanding of regrouping decimalsComparing decimals: 9.97 and 9.798Comparing decimals: 156.378 and 156.348Comparing decimals in different representationsComparing decimals word problemsOrdering decimalsOrdering decimals through thousandths

Practice

Decimals in expanded formGet 3 of 4 questions to level up!

Decimals in written formGet 3 of 4 questions to level up!

Decimals in written and expanded formGet 3 of 4 questions to level up!

Write common fractions as decimalsGet 5 of 7 questions to level up!

Compare decimals through thousandthsGet 5 of 7 questions to level up!

Compare decimals in different formsGet 3 of 4 questions to level up!

Order decimalsGet 3 of 4 questions to level up!

Compare decimals word problemsGet 3 of 4 questions to level up!

Regroup decimalsGet 3 of 4 questions to level up!

Learn

Worked example: Rounding decimals to nearest tenthRounding decimals on the number lineRounding decimals word problems

Practice

Round decimals Get 5 of 7 questions to level up!

Round decimals using a number lineGet 3 of 4 questions to level up!

Round decimals word problemsGet 3 of 4 questions to level up!

Round decimals challengeGet 3 of 4 questions to level up!

Learn

Estimating decimal additionAdding decimalsIntroduction to adding decimals: tenthsAdding decimals with ones and tenths partsAdding decimals with hundredthsAdding decimals with ones, tenths and hundredthsAdding decimals: 9.087+15.31Adding decimals: 0.822+5.65Adding three decimalsEstimating decimal subtractionStrategies for subtracting basic decimalsSubtracting decimalsStrategies for subtracting more complex decimals with tenthsMore advanced subtraction strategies with hundredthsSubtraction strategies with hundredthsSubtracting decimals: 10.1-3.93Subtracting decimals: 9.57-8.09

Practice

Estimating with adding decimalsGet 5 of 7 questions to level up!

Add decimals visuallyGet 5 of 7 questions to level up!

Add decimals like 0.7+0.5Get 3 of 4 questions to level up!

Add decimals like 4+5.7Get 3 of 4 questions to level up!

Add decimals like 40.1+7.6Get 3 of 4 questions to level up!

Add decimals like 0.76+0.21Get 3 of 4 questions to level up!

Add decimals like 5.53+6.1Get 3 of 4 questions to level up!

Add decimals like 47.75+11.98Get 3 of 4 questions to level up!

Estimating with subtracting decimalsGet 5 of 7 questions to level up!

Subtract decimals visuallyGet 5 of 7 questions to level up!

Subtract decimals like 0.9-0.7Get 3 of 4 questions to level up!

Subtract decimals like 1.6-0.3Get 3 of 4 questions to level up!

Subtract decimals like 78.4-3Get 3 of 4 questions to level up!

Subtract decimals like 56.8-17.9Get 3 of 4 questions to level up!

Subtract decimals like 0.75-0.56Get 3 of 4 questions to level up!

Subtract decimals like 0.6-0.43Get 3 of 4 questions to level up!

Subtract decimals like 67.89-6Get 3 of 4 questions to level up!

Subtract decimals like 15-7.45Get 3 of 4 questions to level up!

Learn

Estimating decimal multiplicationDeveloping strategies for multiplying decimalsMultiplying decimals (no standard algorithm)

Practice

Estimating with multiplying decimals and whole numbersGet 3 of 4 questions to level up!

Multiply whole numbers by 0.1 and 0.01Get 3 of 4 questions to level up!

Multiply decimals and whole numbers visuallyGet 5 of 7 questions to level up!

Multiply whole numbers and decimalsGet 3 of 4 questions to level up!

Estimating with multiplying decimalsGet 3 of 4 questions to level up!

Represent decimal multiplication with grids and area modelsGet 3 of 4 questions to level up!

Understand multiplying decimalsGet 3 of 4 questions to level up!

Multiply decimals tenthsGet 5 of 7 questions to level up!

Multiply decimals (up to 4-digit factors)Get 3 of 4 questions to level up!

Learn

Division strategies for decimal quotientsStrategies for dividing by tenthsMultiplying and dividing decimals by 10, 100, 1000

Practice

Divide decimals by whole numbers visuallyGet 3 of 4 questions to level up!

Divide whole numbers by decimals visuallyGet 3 of 4 questions to level up!

Divide whole numbers to get a decimal (1-digit divisors)Get 3 of 4 questions to level up!

Divide decimals by whole numbersGet 3 of 4 questions to level up!

Divide whole numbers by decimalsGet 3 of 4 questions to level up!

Multiply and divide decimals by 10Get 3 of 4 questions to level up!