Number (add/sub)

Single Digit Addition and Subtraction

Addition fact families (a+b=c, c-b=a)

Fact Families (Investigation)

Representation of Add/Sub using Objects

Strategy - bridge to 10 (single and two digit)

Strategy - Compensation (single and two digit)

Strategy - Number Line (single and two digit)

Use strategies to add/subtract two digit numbers

Word Sentences for Addition and Subtraction

Connect Addition and Subtraction

Add Multiples of 10's to Single Digit Numbers

Add Multiples of 10's to Two Digit Numbers

Subtract Multiples of 10's from Two Digit Numbers

Patterns in Addition I

Patterns in Addition II

Patterns in Subtraction I

Patterns in Subtraction II

Complete statements to make a target number up to 20

Add Missing Elements to Make a Statement True with Totals up to 20

Add 3 Numbers (mix of single or two digit numbers) I

Add Multiples of 100's to Single Digit Numbers

Add Multiples of 100's to Two Digit Numbers

Subtract Multiples of 100's from Three Digit Numbers

Patterns in Addition III

Patterns in Subtraction III

Complete statements to make a target number up to 50

Add Missing Elements to Make a Statement True with Totals up to 50

Inequalities with Addition and Subtraction Statements

Add 3 Numbers (mix of single or two digit numbers) II

Add and Subtract Three Digit Numbers I

Add and Subtract Three Digit Numbers II

Grade 3

Add Multiples of 10's to Two Digit Numbers

Interactive practice questions

$10+10$10+10

Easy

< 1min

What is $20+10$20+10?

Easy

< 1min

What is $80+10$80+10?

Easy

< 1min

$50+30$50+30

Easy

< 1min

Outcomes

3.NN3.01

Solve problems involving the addition and subtraction of two-digit numbers, using a variety of mental strategies

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