Year 4
Applying and consolidating: Related number facts and appropriate strategies
Year 4
Applying and consolidating: Related number facts and appropriate strategies
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Lesson details
Key learning points
- In this lesson, we will apply and consolidate our knowledge of deriving related number facts and most efficient strategies for calculating addition and subtraction equations. We will recap our key learning and apply that learning to answer different questions.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
Mrs Crane has used the strategy round and adjust to solve the following equation: 3567 - 2005 = ... which number should she round?
3567
Q2.
Mrs Crane has used the strategy round and adjust to solve the following equation: 4997 - 1564 = ... which number should she round?
1564
Q3.
Which is the most efficient strategy to solve the following equation: 5006 - 4992 =
Partitioning
Round and adjust
Q4.
Which is the most efficient strategy to solve the following equation: 7012 - 6991 =
Partitioning
Round and adjust
Q5.
Which is the most efficient strategy to solve the following equation: 4547 - 1345 =
Counting on
Round and adjust
5 Questions
Q1.
Mrs Crane has derived some facts from the following equation: 10 + 3 = 13. Which of the following is NOT correct?
100 + 30 = 130
110 + 3 = 113
Q2.
Mrs Crane has derived some facts from the following equation: 2 + 3 = 5. Which of the following is NOT correct?
20 + 30 = 50
200 + 300 = 500
Q3.
Which is the most efficient strategy to use to solve the following equation: 2432 + 2438
Count on
Partition
Q4.
Which is the most efficient strategy to use to solve the following equation: 5434 - 1996
Count on
Partition
Q5.
Which is the most efficient strategy to use to solve the following equation: 4007 - 3991
Partition
Round and adjust