Multiplying Learning in Third

Addition and Subtraction

addition

Addition with Regrouping Video | 3-Digit Addition by NUMBEROCK

Use the strategy that is best for you!

Base Ten Blocks
Regrouping
Decomposing
Number Line

Using place value to add 3-digit numbers: part 1 (video) | Khan AcademyLearn to use regrouping, or carrying to add 536+398.

Using place value to add 3-digit numbers: part 2 (video) | Khan AcademyLearn to use regrouping to add 536+398.

Adding 3-digit numbers (video) | Khan AcademyLearn to use regrouping, or carrying to add 709+996, 373+88, and 149+293.

Addition Properties

Commutative: the order does not matter

Associative: add the number in the ( ) first

Identity: a number + 0 shows its true identity

Subtraction

Worked example: Subtracting 3-digit numbers (regrouping) (video) | Khan AcademyLearn to use regrouping (borrowing) and place value to subtract 971-659.

Worked example: Subtracting 3-digit numbers (regrouping twice) (video) | Khan AcademySal using regrouping (borrowing) to subtract 913-286.

Subtraction with Regrouping Song with Worksheets Activities & Game

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