Year 4
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Lesson details
Key learning points
- In this lesson, we will use mental calculation strategies to add and subtract decimal numbers.
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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6 Questions
Q1.
Which addition expression matches 231.5
200 + 30 + 0.5
200 + 30 + 1 + 5
Q2.
If 1 is the whole and 0.8 is a part, what is the other part?
0.1
2
8
Q3.
If 5 is the whole and 2.1 is a part, what is the other part?
0.9
29
5.9
Q4.
If 10 is the whole and 7.3 is a part, what is the other part?
27
3.7
37
Q5.
If 10 is the whole and 1.6 is a part, what is the other part?
0.4
10
9.4
Q6.
If 10 is the whole and it is made of 3 parts. What could the parts be?
1.5 + 2.3 + 5.2
2.6 + 3.3 + 5.1
6 Questions
Q1.
Which addition expression matches 653.3
600 + 50 + 3 + 3
600 + 50 + 3 + 3.5
Q2.
What is 4 tenths add 3 tenths?
7 ones
7 tens
Q3.
What is 9 tenths subtract 4 tenths?
5
5 ones
Q4.
What is 0.8 add 0.6
0.14
14
Q5.
What is 1.6 - 0.7?
1
9
Q6.
What is 0.9 add 9 tenths?
0.99
9.9