Instructional Video22:52
Curated Video

Explain how increasing or decreasing the minuend affects the difference

Pre-K - Higher Ed
Pupil outcome: I can explain how increasing or decreasing the minuend affects the difference. Key learning points: - If I increase the minuend, the difference increases by the same amount. - If I decrease the minuend, the difference...
Instructional Video22:58
Curated Video

Explain and represent constant difference for subtraction

Pre-K - Higher Ed
Pupil outcome: I can explain and represent constant difference for subtraction. Key learning points: - If the minuend and subtrahend are both increased by the same amount, the difference stays the same. - If the minuend and subtrahend...
Instructional Video22:11
Curated Video

Composition of seven-digit numbers

Pre-K - Higher Ed
Pupil outcome: I can explain how a 7-digit number can be composed. Key learning points: - Known facts and unitising can be applied when partitioning 7-digit numbers. - If the missing part is an addend then the other addend is subtracted...
Instructional Video22:46
Curated Video

Explain how adjusting the minuend can make mental calculation easier

Pre-K - Higher Ed
Pupil outcome: I can explain how adjusting the minuend can make mental calculation easier. Key learning points: - If you increase the minuend the difference increases by the same amount. - If you decrease the minuend the difference...
Instructional Video19:52
Curated Video

Use constant difference to balance equations and find unknowns

Pre-K - Higher Ed
Pupil outcome: I can use the same difference rule to balance equations. Key learning points: - If I add __ to the minuend and add the same number to the subtrahend, the difference stays the same. - If I subtract __ from the minuend and...
Instructional Video22:30
Curated Video

Identify the minuend and subtrahend in column subtraction

Pre-K - Higher Ed
Pupil outcome: I can identify the minuend and subtrahend in column subtraction. Key learning points: - The minuend is written first in a column subtraction. - The subtrahend is written beneath the minuend. - The difference is recorded...
Instructional Video23:16
Curated Video

Use and explain the most efficient strategies when subtracting quantities of money

Pre-K - Higher Ed
Pupil outcome: I can use and explain the most efficient strategies when subtracting quantities of money. Key learning points: - Informal calculation strategies such as rounding and compensating can be applied to calculating with money. -...
Instructional Video23:27
Curated Video

Subtracting numbers that bridge through 10

Pre-K - Higher Ed
Pupil outcome: I can subtract through 10 using bridging. Key learning points: - When the subtrahend is bigger than the ones value of the minuend, we will have to bridge through 10 - Composition of numbers to 10 allows us to partition...
Instructional Video24:21
Curated Video

Solve subtraction calculations mentally by using known facts

Pre-K - Higher Ed
Pupil outcome: I can solve subtraction calculations mentally by using known facts Key learning points: - Compensation can be used to simplify subtraction calculations. - Equivalence can be used to simplify subtraction calculations. - A...
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 Video21:21
Curated Video

Explain how adjusting the subtrahend affects the difference: reduction structure

Pre-K - Higher Ed
Pupil outcome: I can explain how adjusting the subtrahend affects the difference in a reduction structure. Key learning points: - The more you subtract the less you are left with. - The less you subtract the more you are left with. - A...
Instructional Video23:12
Curated Video

Explain how adjusting the subtrahend affects the difference: partitioning

Pre-K - Higher Ed
Pupil outcome: I can explain how increasing or decreasing the subtrahend affects the difference in a partitioning structure. Key learning points: - The more you subtract the less you are left with. - The less you subtract the more you...
Instructional Video23:52
Curated Video

Review identifying the minuend and subtrahend in column subtraction

Pre-K - Higher Ed
Pupil outcome: I can identify the minuend and subtrahend in column subtraction. Key learning points: - The minuend and subtrahend are written in columns with the same value digits in the same column. - The subtrahend is written beneath...
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 Video17:50
Curated Video

Subtract a pair of 2-digit numbers by finding the difference

Pre-K - Higher Ed
Pupil outcome: I can subtract a pair of 2-digit numbers by finding the difference. Key learning points: - When the minuend and subtrahend are close in value, finding the difference can be an efficient strategy for subtraction - Finding...
Instructional Video21:18
Curated Video

Subtract 2 or 3-digit numbers using partitioning and bridging a multiple of 10

Pre-K - Higher Ed
Pupil outcome: I can subtract 2 or 3-digit numbers using partitioning and bridging a multiple of 10 Key learning points: - By looking at the minuend and subtrahend we know if we will have to bridge 10 or 100 - If the ones digit of the...
Instructional Video25:12
Curated Video

Subtract fractions from a whole by converting the whole to a fraction

Pre-K - Higher Ed
Pupil outcome: I can subtract fractions from a whole by converting the whole to a fraction. Key learning points: - A fraction with the same numerator and denominator is equal to one whole. - To subtract a fraction from a whole, convert...
Instructional Video24:23
Curated Video

Use column subtraction to subtract from a 2- or 3-digit number

Pre-K - Higher Ed
Pupil outcome: I can use column subtraction to subtract from a 2- or 3-digit number. Key learning points: - Start by subtracting the number with the smallest place value first. - The minuend always appears first in a column subtraction....
Instructional Video24:46
Curated Video

Use the additive relationship to rearrange subtraction equations

Pre-K - Higher Ed
Pupil outcome: I can rearrange subtraction equations. Key learning points: - Equations can be represented using part-part-whole or bar models. - The subtrahend and difference are parts and the minuend is the whole. - Subtraction...
Instructional Video25:19
Curated Video

Choose the most efficient strategy to subtract from a 3-digit number

Pre-K - Higher Ed
Pupil outcome: I can choose the most efficient strategy to subtract from a 3-digit number. Key learning points: - By looking carefully at the minuend and subtrahend, we can choose the most efficient subtraction strategy. - When numbers...
Instructional Video23:57
Curated Video

Add and subtract fractions with the same denominator in a range of contexts

Pre-K - Higher Ed
Pupil outcome: I can add and subtract fractions with the same denominator in a range of contexts. Key learning points: - If fractions have the same denominator they can be added or subtracted. - Number lines can represent addition and...
Instructional Video26:46
Curated Video

Choose efficient approaches when subtracting mixed numbers

Pre-K - Higher Ed
Pupil outcome: I can choose efficient approaches when subtracting mixed numbers. Key learning points: - Partitioning is a strategy that can be used to subtract mixed numbers. - When partitioning, the whole number part and the fractional...
Instructional Video26:17
Curated Video

Calculate change when purchasing several items

Pre-K - Higher Ed
Pupil outcome: I can calculate change when purchasing more than one item. Key learning points: - Calculating change can be thought of as finding the difference between the cost and the amount of money given. - If you are buying several...
Instructional Video26:01
Curated Video

Explain how constant difference can make written calculations more efficient

Pre-K - Higher Ed
Pupil outcome: I can explain how using the same difference rule can make written calculations easier. Key learning points: - It is easier to use a written strategy for subtraction when no exchanging is required. - If the minuend and...