Year 3

Using round and adjust strategies to subtract and add near doubles

Year 3

Using round and adjust strategies to subtract and add near doubles

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Lesson details

Key learning points

  1. 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
Correct answer: 69
70
71
Q2.
Using round and adjust and mental strategies, 42+ 46 =
86
87
Correct answer: 88
Q3.
Using round and adjust and mental strategies, 29 + 28 =
Correct answer: 57
58
59
Q4.
Using round and adjust and mental strategies, 35 + 39=
70
72
73
Correct answer: 74
Q5.
Using round and adjust and mental strategies, 49 + 47 =
Correct answer: 96
97
98