Khan Academy

Subtract within 20 using ten frames (K-A)

Subtracting 14 – 6 (K-A)

Comparison word problems: marbles (K-A)

Comparison word problems: roly-polies (K-A)

Addition and subtraction word problems: gorillas (K-A)

Addition and subtraction word problems: superheroes (K-A)

Adding with arrays (K-A)

Repeated addition: haircuts (K-A)

Using arrays in word problems (K-A)

Addition word problem: horses (K-A)

Subtraction word problem: basketball (K-A)

Subtraction word problem: crayons (K-A)

Adding and subtracting on number line word problems (K-A)

Adding two digit numbers on a number line (K-A)

Multi step addition word problem (K-A)

Multi-step subtraction word problem (K-A)

Understanding even and odd numbers visually (K-A)

Order of operations (2-step expressions) (K-A)

Associative property of multiplication (K-A)

Properties of multiplication (K-A)

Using associative property to simplify multiplication (K-A)

Commutative property of multiplication (K-A)

Distributive property when multiplying (K-A)

Properties and patterns for multiplication (K-A)

Division in context (K-A)