Using round and adjust strategies to subtract and add near doubles
Using round and adjust strategies to subtract and add near doubles
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Lesson details
Key learning points
- In this lesson, we will use round and adjust strategies to subtract and add near doubles. We will partition two digit numbers in order to make calculations easier.
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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.
Using round and adjust and mental strategies, 34 + 35 =
68
70
71
Q2.
Using round and adjust and mental strategies, 42+ 46 =
86
87
Q3.
Using round and adjust and mental strategies, 29 + 28 =
58
59
Q4.
Using round and adjust and mental strategies, 35 + 39=
70
72
73
Q5.
Using round and adjust and mental strategies, 49 + 47 =
97
98