Instructional Video21:03
Curated Video

Using bar models to subtract

Pre-K - Higher Ed
Pupil outcome: I can use bar models to represent and solve subtraction problems. Key learning points: - A bar model can be used to represent subtraction problems and equations. - Overlaying manipulatives on a bar model can be useful for...
Instructional Video24:33
Curated Video

Solve subtraction problems using knowledge of 10 and a bit

Pre-K - Higher Ed
Pupil outcome: I can solve subtraction problems using knowledge of 10 and a bit in different contexts. Key learning points: - The teens numbers can be represented as ten and a bit. - We can solve addition and subtraction problems with...
Instructional Video24:43
Curated Video

Use number pairs to 10 in subtraction contexts

Pre-K - Higher Ed
Pupil outcome: I can use number pairs to ten to solve subtraction problems and equations. Key learning points: - Our knowledge of pairs that sum can help when solving subtraction problems and equations. - Quickly remembering these number...
Instructional Video19:49
Curated Video

Calculate the difference using knowledge of an adjusted subtrahend: difference structure

Pre-K - Higher Ed
Pupil outcome: I can calculate the difference using knowledge of an adjusted subtrahend in a difference structure Key learning points: - The more you subtract the smaller the difference. - The less you subtract the greater the...
Instructional Video21:41
Curated Video

Identify knowns and unknowns in subtraction equations

Pre-K - Higher Ed
Pupil outcome: I can identify knowns and unknowns in subtraction equations. Key learning points: - Equations can be represented using part-part-whole or bar models. - If the minuend is missing, you add the subtrahend and difference. - To...
Instructional Video18:02
Curated Video

Explain how a mixed number is composed

Pre-K - Higher Ed
Pupil outcome: I can explain how a mixed number is composed. Key learning points: - Mixed numbers are composed of a whole number part and a fractional part. - The composition of mixed numbers can be written as an addition equation,...
Instructional Video30:56
Curated Video

Use place value knowledge to write addition and subtraction equations

Pre-K - Higher Ed
Pupil outcome: I can use place value knowledge to write addition and subtraction equations. Key learning points: - The language of unitising helps us to use number facts to add and subtract multiples of 10. - The language of unitising...
Instructional Video31:38
Curated Video

Solve problems involving multiples of ten

Pre-K - Higher Ed
Pupil outcome: I can solve problems involving multiples of ten. Key learning points: - Unitising and known facts help you to add and subtract multiples of ten - If 3 + 2 is equal to 5 then 3 tens + 2 tens is equal to 5 tens which is...
Instructional Video8:46
Curated Video

Non-Negative Fact Families

K - 8th
"Non-Negative Fact Families" models how to solve real-world mathematical problems containing non-negative rational numbers by using knowledge of fact families.
Instructional Video2:39
Curated Video

Solving Subtraction Equations Using Inverse Operations

K - 12th
Solving one-step equations using inverse operations: subtraction equations.
Instructional Video2:59
Curated Video

Solving Subtraction Equations Involving Decimals

K - 12th
Solving one-step decimal equations: subtraction.
Instructional Video1:14
Curated Video

Solving Subtraction Equations Using Inverse Operations (Example)

K - 12th
Solving one-step equations using inverse operations: subtraction equations.
Instructional Video2:09
Curated Video

Solving Subtraction Equations Involving Fractions

K - 12th
Solving one-step equations involving fractions: subtraction.
Instructional Video11:08
Math Antics

Solving Basic Equations Part One

6th - 9th Standards
Add and subtract to keep an equation in balance. With the assistance of a balance, the video explains the process of solving an equation. The presentation details how to solve equations that involve addition and subtraction.
Interactive3:01
Scholastic

Study Jams! Relate Addition & Subtraction

1st - 4th Standards
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...