# Module 2: Place value and problem solving with units of measure

## Topic A: Time measurement and problem solving

Learn
Telling time (labeled clock)Telling time (unlabeled clock)Telling time to the nearest minute (labeled clock)Telling time to the nearest minute (unlabeled clock)Telling time reviewTime differences exampleTelling time with number lineTime word problem: puzzleTime word problem: travel time
Practice
Tell time with a labeled clockGet 5 of 7 questions to level up!
Tell time without labelsGet 5 of 7 questions to level up!
Tell time to the nearest minuteGet 5 of 7 questions to level up!
Time differences (within the hour)Get 5 of 7 questions to level up!
Telling time on the number lineGet 5 of 7 questions to level up!
Time word problems with number lineGet 5 of 7 questions to level up!
Telling time word problems (within the hour)Get 5 of 7 questions to level up!

## Topic B: Measuring weight and liquid volume in metric units

Learn
Understanding mass (grams and kilograms)Word problems with massUnderstanding volume (liters)Word problems with volume
Practice
Estimate mass (grams and kilograms)Get 3 of 4 questions to level up!
Word problems with massGet 5 of 7 questions to level up!
Estimate volume (milliliters and liters) Get 3 of 4 questions to level up!
Word problems with volumeGet 5 of 7 questions to level up!

## Topic C: Rounding to the nearest ten and hundred

Learn
Rounding to the nearest 10 on the number lineRounding to the nearest 100 on the number lineRounding to nearest 10 and 100
Practice
Round to nearest 10 or 100Get 3 of 4 questions to level up!
Round to nearest 10 or 100 on the number lineGet 5 of 7 questions to level up!
Round to nearest 10 or 100 challengeGet 3 of 4 questions to level up!

## Topic D: Two- and three-digit measurement addition using the standard algorithm

Learn
Intro to place valueUsing place value to add 3-digit numbers: part 1Using place value to add 3-digit numbers: part 2Estimating when adding multi-digit numbersAdding 3-digit numbersBreaking apart 3-digit addition problemsAddition using groups of 10 and 100Three digit addition word problems
Practice
Estimate to add multi-digit whole numbersGet 3 of 4 questions to level up!
Break apart 3-digit addition problemsGet 3 of 4 questions to level up!
Add using groups of 10 and 100Get 3 of 4 questions to level up!
Add on a number lineGet 3 of 4 questions to level up!
Add within 1000Get 3 of 4 questions to level up!
Select strategies for adding within 1000Get 3 of 4 questions to level up!

## Topic E: Two- and three-digit measurement subtraction using the standard algorithm

Learn
Estimating when subtracting large numbersMethods for subtracting 3-digit numbersSubtraction by breaking apartSubtracting 3-digit numbers (regrouping) Worked example: Subtracting 3-digit numbers (regrouping) Worked example: Subtracting 3-digit numbers (regrouping twice)Worked example: Subtracting 3-digit numbers (regrouping from 0)Adding and subtracting on number lineMissing number for 3-digit subtraction within 1000Missing number for 3-digit addition within 1000Three digit subtraction word problems
Practice
Estimate to subtract multi-digit whole numbersGet 3 of 4 questions to level up!
Break apart 3-digit subtraction problemsGet 3 of 4 questions to level up!
Subtract on a number lineGet 3 of 4 questions to level up!
Select strategies for subtracting within 1000Get 3 of 4 questions to level up!
Subtract within 1000Get 3 of 4 questions to level up!
Add and subtract within 1000 word problemsGet 3 of 4 questions to level up!