A 60-minute lesson designed to explore the jump strategy for adding two- and three-digit numbers.
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Jump Strategy
60 mins
|
Suitable for years:
3
Curriculum
VC2M3A02
Extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator <ul> <li>partitioning using materials and part-part-whole diagrams to develop subtraction facts related to addition facts, such as 8 + 7 = 15 therefore 15 − 7 = 8 and 15 − 8 = 7</li> <li>using partitioning to develop and record facts systematically (for example, ‘How many ways can 12 monkeys be spread among 2 trees?’, 12 = 12 + 0, 12 = 11 + 1, 12 = 10 + 2, 12 = 9 + 3, …), explaining how they know they have found all possible partitions</li> <li>understanding basic addition and related subtraction facts and using extensions to these facts; for example, 6 + 6 = 12, 16 + 6 = 22, 6 + 7 = 13, 16 + 7 = 23, and 60 + 60 = 120, 600 + 600 = 1200</li> </ul>
MA2-AR-01
Selects and uses mental and written strategies for addition and subtraction involving 2- and 3-digit numbers
MA2-NSM-01
Estimates, measures and compares the masses of objects using kilograms and grams
ACMNA053
Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
ACMNA055
Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
AC9M3N03
Add and subtract two- and three-digit numbers using place value to partition, rearrange and regroup numbers to assist in calculations without a calculator
AC9M3A02
Extend and apply knowledge of addition and subtraction facts to 20 to develop efficient mental strategies for computation with larger numbers without a calculator
Author
Teach Starter Publishing
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